The modal olivine and Ni enrichment in the lower part of the sheet indicates the accumulation of early formed olivine crystals. 9 ± 1. [2] Lying in the heart of Cumberland Plain, in the suburb of Pemulwuy (previously Greystanes ), the intrusion is Sydney's largest body of igneous rock, rising to a height of 117 metres (384. SOLD MAY 4, 2023. The general geologic profile of our study site is depicted in Fig. a type of dark rock that comes from magma (= very hot liquid rock that has cooled): 2. St. Field mapping, drill-core logging, petrography, laser ICP-MS analysis on pyrite, chlorite geothermometry and geochemical analysis of hydrothermally altered rocks reveal two distinct styles of gold mineralisation at Mt. Nicole DeLarato, MD, Pediatric Ophthalmologist in Philadelphia, PA, 19134. Condominiums Book 32537, Page 483 : 2021 Assessment: DELARATO FRANCES 456 BRITTANY J DELRAY BEACH, FL 33446 . The Dabie Orogen has an Archean–Paleoproterozoic basement (Jian et al. Chilled margins are observed in dikes of all the three groups. dolerite translate: 辉绿岩，粗粒玄武岩. Where olivine also occurs as an additional mineral, the rock is termed an ‘olivine dolerite. Dr. , Dalziel Citation 1997; Torsvik et al. Nearby homes similar to 28 Dolerite Dr have recently sold between $240K to $402K at an average of $170 per square foot. Nelson and Tolmans Hill near Hobart in Tasmania. Dolomite, type of limestone, the carbonate fraction of which is dominated by the mineral dolomite, calcium magnesium carbonate. The development of coarse- and fine-grained amphibolite dikes depends on the grain size of the original dolerite dike; coarse-grained amphibolite dikes are derived from coarse-grained dolerite dike, and fine-grained. 1 b). $380,000 Last Sold Price. Viewing the full profile is available to verified healthcare professionals only. Both are a part of the Violetta main cast. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. Ion microprobe. Mekelle. In East Houghton on Waterworks Road there is a large basalt boulder, likely a big piece of one of the Keweenawan lavas. . More than 90% of all volcanic rock on Earth is basalt. This paper presents major, trace element and Sr-Nd isotope data on two large, east-west trending dolerite dykes in the southeastern part of the Karoo Basin, the South Gap (155 km long, ≤275 m wide) and the North Gap (150 km long, ≤190 m wide) dykes. Want to Read. 15 - MENACING, 215. Cecily Lesko is an ophthalmologist in Clifton, New Jersey and is affiliated with multiple hospitals in the area, including Mount Sinai Hospital and St. Abstract It is well established that Cretaceous magmatism in the South China Block (SCB) is related to the Paleo-Pacific subduction. Regional geological setting2. The preferred term for what is called diabase in the United States. overall 5food 5service 5 5. Section snippets Study area. 73 g/cm 3 and 2. , 1996; Zhao and Zhai, 2013). Available online a t Pelagia Research Library Advances in Applied Science Research, 2014, 5(3):54-58 ISSN: 0976-861027 Dolerite Dr is a 1,370 square foot house on a 2,396 square foot lot with 3 bedrooms and 2 bathrooms. Diabase differ from gabbros chiefly in. Gereb Bi’ati is a reservoir located near Mekelle in the Tigray Region in Ethiopia. dolerite. Make an appointment. Learn more. Geological samples were collected from. She speaks English and Spanish. Diabase, fine- to medium-grained, dark gray to black intrusive igneous rock. 4 Beds. 89 avg rating — 72 ratings — 2 editions. 3 Beds. Born in the Bronx NY Son of John Vincent Delarato and Frances Theresa (Cascione) Delarato. Introduction. She has 28 years of experience. ar Indices Cotización del dolar HOY Cotización del dolar, actualizada. Fragmentation of the Protocontinental masses along the orthogonal type of mega-fractures during cratonisation processes is responsible in breaking-up of the Indian shield into major crustal blocks. In this book, body image advocate and sexual wellness expert Laura Delarato teaches that sexual pleasure is an essential form of self-care, and it begins with loving your body and yourself. 4 Beds. Dr. U–Pb baddeleyite ages of dolerite dikes and sills fall into three age intervals: 1264–1271 (the Dalarna complex), 1256–1259 (the Västerbotten-Ulvö-Satakunta complexes) and ∼1247. t. , Liu et al. In British and Australian usage: A medium grained mafic intrusive rock whose main components are calcic plagioclase and clinopyroxene and which is characterized by ophitic to subophitic texture; usually found in sills and dykes. Whole-rock ICP-MS and ICP-AES chemical analyses showed compositions. It is formed when magma is intruded into other rocks, and then. Representative rocks exhibit intersertal to sub-ophitic textures. It usually occurs as large intrusions, dikes, and sills within continental crust. 2010). This coarse-grained olivine gabbro sample comes from one of several large basic intrusions in NE Scotland that were intruded during the Grampian orogeny. Rock types are specific assemblages of minerals (most rocks are composed of minerals). It is a mafic rock, containing magnesium and iron, often in form of olivine. Its unique combination of minerals, textures, and appearances has captivated scientists, artists, and builders for centuries. 109 Lemley Dr, Fort Worth, TX 76131. Timmerman. $369,000 Last Sold Price. Timothy Keagy Cell # Wonderful 3 Bedroom, 2 bath one level stone and. 5 Ga, with evidence of multiple mafic intrusive events, many of which in the WAC having an undetermined age (Jessell et al. 1). The Early Carboniferous magmatic event in the southern Baltic Sea is manifested by dolerite intrusions. Dolerite Blend consists of striped 1/4" chips. It is a medium grained igneous rock, and can be dark grey or black with greenish shades in colour. Source:Microbial-Induced Calcite Precipitation (MICP) stimulates soil microbiota to induce a cementation of the soil matrix. The Karkloof Plateau is underlain by shale, siltstone and sandstone of the Estcourt Formation (Beaufort Group) and similar lithologies of the Volksrust Formation (Ecca Group) that have been extensively intruded by Jurassic dolerite sills and dykes (Fig. As nouns the difference between basalt and dolerite is that basalt is a hard mafic igneous rock of varied mineral content; volcanic in origin, it makes up much of the Earth's oceanic crust while dolerite is a fine-grained basaltic rock. These can include Bronx County death certificates, local and New York State death registries, and the National Death Index. Hastings, D. Find Laura Delarato of Vox Media's articles, email address, contact information, Twitter and more320 32nd St S, Brigantine, NJ 08203; Single Family; Lot Size - 3,598 sqft, Floor Size - 2,220 sqft; Parcel ID# 0302802000000018; Last Sale Aug 2008 - Price $33,000There are 3 doctors at St. Dr. Dr. Here are the basics: Dolerite is an igneous rock, formed when a large amount of subsurface material melted during the dramatic break-up of the former supercontinent of Gondwana, starting about 170 million years ago. 29 acre lot. We would like to show you a description here but the site won’t allow us. It includes much of the common white marble. Dolerite is a dark igneous rock. The dikes have a thickness ranging from 10 cm to 3–4 m. They are customarily designated by the names at the left of this column. For more information on how to use FLAKE and technical information, visit our product literature. Dr. Diabase or Dolerite. Luisa Hendry (@scottishgeologist) on TikTok | 896. Nicole Helene Delarato, MD is a health care provider primarily located in Philadelphia, PA, with other offices in Voorhees, NJ and VOORHEES, NJ ( and 3 other locations ). ¡Ha ocurrido un error! Diabase ( / ˈdaɪ. DONNELLY, W. The latest tweets from @Dalarito2In this conversation. Sell & Trade Game Items | OSRS Gold | ELO. Wall rock alteration products of sheared minerals, micro faults, and quenched glassy matrix in micro faults are the effects of magma ascent under tremendous pressure in both discordant and concordant intrusions. The spatial coincidence between the 2. Download scientific diagram | Geological samples of dolerite and hornfels. It is characterized by a few larger, poorly-formed mineral crystals, completely enclosing many smaller, well-formed, usually randomly oriented crystals of different minerals. , 1997, Svensen et al. The Karoo igneous suite is a significant part of a large igneous province which extends from South Africa, along the Trans-Antarctic Mountains to Tasmania and South Australia (Fig. Photo shows gold jewelry recovered from the ash deposits of the 79 A. Address 100 Kings Way East Suite C Sewell, NJ 08080-2238 Map & Directions. Practice 160 E Erie Ave Philadelphia, PA 19134. 51 - CRIMINAL CONTEMPT 1 12/16/19693. In Champions Of The Universe, five-time Guinness World Record holder Marawa The Amazing travels the country on. Dr. The newer dolerite dykes around Keonjhar within the Singbhum Granite occur in NE–SW, NW–SE and NNE–SSW trends. diabase, fine- to medium-grained, dark gray to black intrusive igneous rock. Aluminium is a major contaminant in these iron ores and its mineralogical host impacts the efficiency and productivity of the steel-making process. Delarato is affiliated with St Christopher's Hospital For Children. GSWA Record 2020/12 Proterozoic dolerite dykes in the western Capricorn Orogen, Western Australia. Her essays, written work, and art have appeared in Condé Nast Traveler, Coveteur, The Cut, Healthyish, Travel & Leisure, Men's Health, Refinery29, Allure, and People. 7 ± 4 Ma. MELSON, R. Laura Delarato is a body image advocate, sexual wellness educator, and writer. , 2006, Zhao et al. Scoria: coarsely cellular, dark colored. revise the orogenic, magmatic and metamorphic evolution of the southern Kalgoorlie Terrane. C. "My Pleasure gives us what so many of us really need: an invitation to look inward, to accept ourselves, and to ask hard questions. 2 Baths. The Käyser dolerite dykes occur along conspicuous NW-SE-trending faults, some of. Mean annual rainfall is 445 mm and minimum mean annual temperatures of 10. The Hart Dolerite has been interpreted as a post-collisional (post Halls Creek Orogeny) magmatic event caused by plate reorganization (Sheppard et al. All about Diabase rocks. Vitrophyre: porphyritic. 66 Ma) Phenaimata alkaline igneous complex, associated in space and time with the Deccan large igneous province (LIP) in Western India, consists of bimodal (tholeiitic to alkaline) differentiated plutonic to volcanic igneous rocks. 1a. , 1980, Begg, 1989). problems even before visiting the site. South Africa. Figure 4 revealed that the value of MDD of the natural soil reduced on addition of 10%. Low Ti-Zr mafic rocks have isotopic and. 1 Dolerite Dr, Taylors SC, is a Single Family home that was built in 2009. Nelson and Tolmans Hill, Hobart, Tasmania (Fig. Dr. Sold: 5 beds, 3 baths, 2834 sq. She is affiliated. . Beautiful 4 bedrm, 2. 10328 Fossil Valley Dr, Fort Worth, TX 76131. . Number of shield terrains throughout the world has been intruded by the Precambrian dyke swarms,. Philadelphia, PA 19134. An attempt is made in this paper to design and develop a improved and stable zirconia-dolerite ball plate, having low coefficient of thermal expansion, scratch resistance, high compactness degree with improved flexural strength of 1000 MPa, as shown in Fig. 3 bed. 2014 Tasman National Park, with its towering dolerite cliffs, and Cradle Mountain-Lake St Clair National Park, with its. Formation. Next. Dr. əˌraɪt /) or microgabbro, [1] is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Sulphur isotopes in the Kharaelakh intrusion were studied in 19 samples from KZ-963 drill core. Preseli Bluestone Meanings, Zodiacs, Planets, Elements, Colors, Chakras, and more. The Kiruna-type iron oxide-apatite deposits, a subtype of the IOCG family, are recognized as economic targets as well. , 2017, Xie et al. It occurs mostly in shallow intrusions (dikes and sills) of basaltic composition. Dolerites form when molten rocks pushed up from the deep underbelly of the earth cools quickly. It grades to basalt when it solidifies rapidly and to gabbro when more time is given to the. boXepos, deceptive), in petrology, the name given by Haiiy to those basaltic rocks which are comparatively coarse grained and nearly, if not quite, holocrystalline. Dolerite has a similar origin, from the Greek doleros, deceptive. , Liu et al. Ma (the Jämtland complex). 449 acre⋅ft) Surface elevation. The Prospect dolerite intrusion, or Prospect intrusion, is a Jurassic picrite or dolerite laccolith that is situated in Sydney, New South Wales, Australia. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine grained to aphanitic chilled margins which may contain tachylite (dark mafic glass). Christopher's Pediatric Associates Ophthalmology - Sewell. , 2012), whereas the upper volcanic series consist of predominant rhyolite. g. contributed to the problems, and these were considered as far as possible. 830 Ma Jiabang dolerite, which is located in southeastern Guizhou Province, South China Block (SCB) (Fig. , 2012). Currently Reading. Whin Sill. 2. 1 c). Dr. • One of its distinguishing character is its ophitic texture. 88. Dined on August 25, 2023. The high strain rate characterisation of metadolerite rock is done for different specimen sizes through detailed tests using a 76 mm diameter split Hopkinson pressure bar (SHPB) device in an. 3. Nicole Delarato, MD is a board certified ophthalmologist in Sewell, New Jersey. Della Ratta is a Internist in Mineola, NY. 1,963 Sq. Back to top. Watch the latest video from Luisa Hendry (@scottishgeologist). is the medium-grained equivalent of a basalt - a basic rock dominated by plagioclase and pyroxene. and Tabod, C. 22q11. ,. The hydrogeological characteristics depend on inter alia the geological material. When the plates are reconstructed to Early Jurassic configuration (Seton et al. Whilst in-roads are being made into clean energy, coal remains the primary energy source in South Africa for domestic power generation, and is set to dominate energy demands for the foreseeable future (Hancox and Götz 2014). This home is currently off market - it last sold on June 04, 2009 for $183,600. What does it take to work granite with a stone hammer? Let’s experiment! We have tried working granite with dolerite hammers, just like those used by the Anc. Laura Delarato, senior creative at Refinery29. Delarato is affiliated with St Christopher's Hospital For Children. Delarato is a Ophthalmologist in Sewell, NJ. 1,498 likes · 16 talking about this · 1,086 were here. 183 Ma) Karoo Large Igneous Province (LIP), is considered to have both geothermal and. A. a type…. Petrographic slide of dolerite (x8). JOHN TOTAROThe data on the mineral composition and crystallization conditions of magnesian skarn and magnetite ore at contacts of dolerite with rock salt and dolomite in ore-bearing volcanic—tectonic structures of the Angara—Ilim type have been integrated and systematized. Diorite is an intriguing igneous rock that holds a significant place in the world of geology, art, and construction. Dolerite definition: . Meaning of dolerite. West Lafayette, IN 47906. A fulfilled mother, friend, sister, boss is someone who takes care of their personal needs first. Diabase or dolerite is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. 75. The resulting magma bubbled and oozed its way towards the earth’s surface, becoming one of the largest upwellings of magma in. Quantity : Add to Wishlist Add to Compare. Dolerite plate yields strength in design, very less thermal conductivity,. Martin J. Mt Calder Quarry is a family owned business running a quarry located on Mt Calder on the East Coast of Tasmania just 50 minutes north of Hobart. Diabase or dolerite is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Percy. , 2015; Miller et al. DiLoreto Club, Mishawaka, Indiana. The North China Craton is one of the oldest cratons in the world with crustal components up to 3. She received. Visit findatopdoc. Geological samples were collected from several natural outcrops and studied together with seven archaeological stone tools found in a Chalcolithic site of the southern Valencian Community. Gold forms in close association with volcanoes or is hosted in volcanic rocks. The Dabie Orogen is traditionally divided into the western and eastern segments by the Shang–Ma fault (SMF). Science & Origin of Preseli BluestonePreseli Bluestone, also known as Preseli Stone or Preseli Spotted Dolerite, is a very unique and rare igneous rock that crystallizes in the form of masses. MLS# 14559976. Ophthalmology • Female • Age 56. intergrown with ilmenite–magnetit. If you can, try. , 2005). , 2012). Dr. ”. Dr. Abstract and Figures. Consisting of plagioclase feldspar and pyroxene, it is a widespread intrusive rock, quarried for crushed and monumental stone (known as "black granite"). Share. A bout 182 million years ago, all hell broke loose in Southern Africa. From the latitude of Beaufort West in the central Karoo to southern Malawi, from East London to the Okavango and beyond, the earth began to crack open and molten basalt poured out. Diabase is a mafic, holocrystalline, igneous rock equivalent to volcanic basalt or plutonic gabbro. (Citation 2008), with data on the BDS components from Andréasson et al. * * All offers due by Monday, May 8, 2016. raised in Yonkers NY Attended Yonkers schools. Abstract. Zircons from layered gabbro of Buguriktai massif, a fragment of ophiolite complex, have U Pb age of 560 ± 5 Ma, which was interpreted as a time of SSZ ophiolite formation (Elbaev et al. Synonym: diabase. , 2011, Zheng et al. Europe Imports have designed a mosaic range exclusively for Australia to add to our already stunning ranges designed by Ezarri in Spain. Nearby homes similar to 14 Dolerite Dr have recently sold between $265K to $380K at an average of $170 per square foot. com, the largest free online thesaurus, antonyms, definitions and translations resource on the web. The five soil profiles studied are located at Mt. T. Find Dr. Science & Origin of Preseli BluestonePreseli Bluestone, also known as Preseli Stone or Preseli Spotted Dolerite, is a very unique and rare igneous rock that crystallizes in the form of masses. 180 Ma) in this part of southern Africa (Cox, 1992, Encarnación et al. In this study, we conducted zircon U-Pb dating, and whole-rock geochemical and Sr-Nd isotope analyses on the Late Mesozoic dolerite dykes in the Bailingshan Fe deposit (Eastern Tianshan Orogen, NW China) to unravel their petrogenesis and regional tectonic significance. . Groundwater Dictionary. The dolerite sills form such impermeable layers and so may have acted as good trap rocks for the gas. Dolerite dykes from Fell locality in Southern Adamawa plateau in central Cameroon transect the granitoids of the basement along Pan African cracks of N70 and N135. Laura was born in March 6, 1987 Laura has 1 phone number Laura has 21 past addresses Laura has 2 associates by phone number Laura has 263 associates by address Laura’s home type is Multiple Family Dwelling Unit The property where Laura lives was built in 2003 Laura has resided at the current address since 2022 The value of the property where. It is composed of three Archean and Paleoproterozoic shields: the Reguibat Shield and the Anti-Atlas belt to the north and the Leo-Man Shield to the south, separated by. , 2012). Verified account Protected Tweets @; Suggested usersDielari (Die/go and C/lari) is the real life pairing of Diego Domínguez and Clara Alonso, also called Clari. Receive the latest news on events, exhibitions, science research and special offers. The sample was collected from the Bin quarry, Huntly, Aberdeenshire, where the intrusion displays overturned cumulate layering with compositions varying from gabbro to. Scares. A methodological proposal for the characterisation of dolerite rock aiming to test a non-destructive and non-invasive analytical approach has been developed. Olivine gabbro - Huntly. Ekori and adjoining areas is located in western part of the Ikom – Mamfe embayment. The mineral systems for most. $374,000 Last Sold Price. Find Dr. My Pleasure: An Intimate Guide to Loving Your Body and Having Great Sex helps bridge the gap between loving yourself and. [1]The seven rocks that made Australia Bradshaw AEGC 2019: From Data to Discovery – Perth, Australia 2 converted to large seams of high quality black coal. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. 4 Beds. The earthen dam that holds the reservoir was built in 2000 by SAERT. High-grade Cu-Au in outcrop at Levisivisi prospect. 4 beds, 2. In Khanozai–Muslim Bagh area, NW Pakistan, the sills are intruded into mainly Triassic–Jurassic successions of Indian platform sediments. Poicilitic or poikilitic texture is one of the igneous rock textures. dolerite definition: 1. Dolerite was once a molten rock at a temperature of around 1,200 degrees C. | Time series of soil-atmosphere CO 2 fluxes of sandy soil columns treated with the traditional MICP treatment (MICP) and using dolerite fines applied on the soil surface as source for calcium. She is affiliated with Virtua Voorhees, Cooper University Health. Dolerite, also called diabase, is a dark igneous rock intermediate in grain size between basalt and gabbro. Ft. How to say dolerite in English? Pronunciation of dolerite with 3 audio pronunciations, 5 translations, 3 sentences and more for dolerite. Diabase (or dolerite) is a medium-grained igneous rock with basaltic composition. Frances T Delarato (age 77) is listed at 456 Brittany J Delray Beach, Fl 33446 and is affiliated with the Democratic Party. This site uses cookies. However, the starting time and the associated deep crust-mantle. A dark-coloured, medium-grained igneous rock which contains plagioclase feldspar of labradorite composition and pyroxene of augite or titanaugite composition as essential minerals, and magnetite, titanomagnetite, or ilmenite as accessory minerals. Image source: National Parks Service. Although not popular, it makes an excellent monumental stone and is one of the dark-coloured rocks commercially known as. Cookies help us give you a better experience on our site. It's actually a selfless act to do you — not. Both high Ti-Zr and low Ti-Zr dolerites occur, but the high Ti-Zr rocks appear to be the dominant type of magmatism. A dike swarm ( American spelling) or dyke swarm ( British spelling) is a large geological structure consisting of a major group of parallel, linear, or radially oriented magmatic dikes intruded within continental crust or central volcanoes in rift zones. 2 bath. Nicole Delarato, MD. Where olivine also occurs as an additional mineral, the. Dr. SOLD MAY 22, 2023. e. 5 bath two story hom. Nicole Helene Delarato, MD is a health care provider primarily located in Philadelphia, PA, with other offices in Voorhees, NJ and VOORHEES, NJ ( and 3 other locations ). Dolerite pounders are hand-held stone took that were widely used in Egypt from the third to late first millennium BCE for quarrying and dressing granite and other hard rocks. Nelson and Tolmans Hill were selected because they have extensive areas of dolerite with a wide range of soils developed across a range of topographic settings. 1b. The soils form a sequence ranging from a Black Vertosol (P8) to four texture contrast soils,. That girl that makes videos about geology and rocks🌋💎⚒ #tiktoksaboutrocks. a type of dark rock that comes from magma (= very hot liquid rock that has cooled): 2. A mineral consisting of the carbonate of lime and magnesia in varying proportions. , Houston, TX 77058, USA. Delarato's phone number, address, insurance information, hospital affiliations and more. dolerite. She is affiliated with Virtua Voorhees, Cooper University Health Care, and St. Nicole Delarato, MD is an ophthalmology specialist in Philadelphia, PA and has over 27 years of experience in the. It is a mafic rock, containing magnesium and iron, often in form of olivine. SOLD MAR 10, 2023. Diabase is often confused with basalt due to their similar appearances, but they have distinct mineral. Glacial processes and their land forms. (2002). 斑れい岩 ほど結晶は大きくない。. Dolerite cools under basaltic volcanoes, like those at mid-ocean ridges. dolerite meaning: 1. Quartz dolerite or quartz diabase is an intrusive rock similar to dolerite (also called diabase), but with an excess of quartz. 4‰) in hornfels and metasomatic rocks with anhydrite and calcite. They are easier, fun and more relaxed to be around. Mary's General Hospital. 1) were classified according to Isbell (1996), and they represented three important soil orders; Sodosol, Chromosol and Vertosol. Carbonatite: volcanic or subvolcanic rocks composed mostly of primary carbonate minerals, such as calcite, dolomite or Na-carbonates. Internally, it is composed of supracrustal. This work presents the petrographic and geochemical data of the dolerite dykes crosscutting the Pan-African basement of Figuil (North-Cameroon) and Léré (South-West Chad) in order to approach their petrogenesis and their emplacement context. It's a clichto say that the geology of a place defines so much of what occurs on it, but the case of dolerite in Tasmania truly bears this theory out. Diabase differ from gabbros chiefly in. Empty. 1 mi) long, 200-metre (660 ft) high, mountain cliff, close to the sea, at the north-eastern corner of County Antrim, Northern Ireland. 5 Baths. It’s 2 a. She is. It oozed upwards from a hundred kilometres or more below the surface. Writer and body image advocate Laura Delarato spent her pandemic lockdown writing the body positive book about sex that you didn’t know you needed. These dykes have been emplaced in the older basement composed of granulite. The coastline of the southern Tasmania, in Australia, is composed of stunning rock columns that protrude up to 300 meters from the sea level. Nature, 227, 152-153. Dolerite dykes in the Karoo Basin of South Africa are considered part of the primary plumbing system that facilitated the ascent of the mantle-derived magmas for the Drakensberg flood basalts, prior to the break-up of Gondwana during the Jurassic (ca. Peridotite.