Geology of the great dyke of zimbabwe

Author: kgyd

August undefined, 2024

WebGeology. Geologically the Great Dyke is not a dyke, but is lopolithic and Y-shaped in cross-section. It is a group of layered ultramafic intrusions that extend across Zimbabwe with a strike of about N10°E. The width of the intrusions vary from 3 to 12 km (7.5 mi). The Great Dyke is unusual in that most ultramafic layered intrusions display ... WebPREFACE. Welcome to the Pre-Symposium Excursion to the Great Dyke of Zimbabwe .sponsored and org.ani?.ed hy the Geolog.Ical Society of Zimbabwe as part, and on lx·hal!'. uf the 8th lntemational Platinum SvmposiUilL Rustenbnrg, South Africa 28th June to 3rd July, 1998.. The Great Dvke Is one ol several major maCic layered intrusions wurlcl …

Dike igneous rock Britannica

WebThe Great Dyke of Zimbabwe is a layered intrusion of igneous, metal-bearing rock that has been dated to approximately 2.5 billion years in age. ... This geological feature extends more than 550 kilometers (342 miles) … WebSep 1, 2003 · Re-Os data for chromite separates from 10 massive chromitite seams sampled along the 550-km length of the 2.58-Ga Great Dyke layered igneous complex, Zimbabwe, record initial 187Os/188Os ratios in ... its technical recruitment

Great Dyke, Zimbabwe - NASA

WebJan 1, 2011 · The Great Dyke of Zimbabwe hosts the world's second largest reserve of platinum-group elements (PGE). Economic PGE mineralization is restricted to sulfide … WebMay 1, 1982 · A. H. WILSON, The Geology of the Great ‘Dyke’, Zimbabwe: The Ultramafic Rocks, Journal of Petrology, Volume 23, Issue 2, May 1982, Pages 240–292, ... none of … WebMar 1, 2000 · The Great Dyke and its two main satellites, the Umvimeela and East Dykes, trend in a north—northeast direction across Archaean basement rocks of the Zimbabwe Craton. SHRIMP analysis of baddeleyite from all three intrusions yields statistically identical results and confirms their essentially synchronous emplacement at 2574 ±2 Ma. its technologies and logistics locations

Darwendale Platinum Project, Great Dyke, Zimbabwe

Mimosa Mine, Zvishavane (Shabani; Shabanie; Shavani), …

WebThe geology of Zimbabwe in southern Africa is centered on the Zimbabwe Craton, a core of Archean basement composed in the main of granitoids, schist and gneisses. It also … WebThe dyke stretches about 530 km across the craton and varies from between 3 and 12 km wide long its length. The dyke is extremely rich in platinum and chromium deposits that support the Zimbabwe economy. … nerf sawed offWebJul 30, 2000 · General geology of the Great DykeThe Great Dyke of Zimbabwe (general reviews given in Wilson [5]) is a linear intrusion of mafic and ultramafic rocks, 550 km in length that cuts across the Zimbabwe craton in a north-northeastern direction (Fig. 1). It is 11 km at its widest point and narrows to less than 3 km wide in areas where it has … nerf sawed off shotgun

"WebJun 1, 1992 · The Geology of the Great Dyke, Zimbabwe: Crystallization, Layering, and Cumulate Formation in the P1 Pyroxenite of Cyclic Unit 1 of the Darwendale … " - Geology of the great dyke of zimbabwe

Geology of the great dyke of zimbabwe

WebGreat Dyke is a major intrusion of mafic and ultramafic rocks that cuts across the dominantly Archean rocks of the Zimbabwe Craton and is regarded as a major magmatic event that marks the Archean...

Did you know?

WebZimbabwe. Each sheet includes cross sections, hypothetical floor of Great Dyke, key map and index to sheets. To accompany Geological Survey of Southern Rhodesia Bulletin no. 47, entitled The Great Dyke of Southern Rhodesia. Description: 1 map on 9 sheets : color ; sheets 93 x 60 cm, or smaller: Cartographic Mathematical Data: Other Titles: WebJan 1, 2011 · The Great Dyke of Zimbabwe hosts the world's second largest reserve of platinum-group elements (PGE). Economic PGE mineralization is restricted to sulfide disseminations mainly in pyroxenites of the P 1 layer, the Main sulfide zone, which is currently under extensive exploration. The producing Ngezi and Mimosa mines are the …

WebThe Bushveld Complex underlies an area of about 50,000 square km (20,000 square miles); and the Great Dyke of Zimbabwe, another layered complex, has been traced for more than 480 km (300 miles). Anorthosite is also found on the lunar surface. WebThe main platinum-group element (PGE) occurrence in the Great Dyke of Zimbabwe, the Main Sulfide Zone (MSZ), is a tabular stratabound layer hosted in pyroxenites. A petrographic and silicate composition study …

WebJan 1, 2024 · Unki Mine is situated on the Great Dyke of Zimbabwe, a mafic-ultramafic layered lopolith of intermittent mountain ridges and flat plains 550km long. At its widest part, the dyke is 12km across. WebThe Great Dyke of Zimbabwe is a layered mafic intrusion of igneous, metal-bearing rock associated with chromium, nickel, copper, platinum, titanium, iron, vanadium, and tin. The Great Dyke extends more than …

WebThe Great Dyke in the southern Zimbabwe Craton is one of the most remarkable intrusive bodies in the world, formed when molten rock forced its way into existing rock formations, which later eroded. The Dyke, with a width of 3-12 km, extends about 530 km across Zimbabwe. The Dyke is extremely rich in platinum and chromium deposits, that support …

WebThe geology of the Great Dyke is substantial, and has been the subject of a considerable amount of serious scientific research since 1958. ... The Great Dyke of Zimbabwe is a major, NNE-trendi ng ... nerf saphene externeWebRhodium ore refers to a naturally occurring mineral deposit that contains the precious metal rhodium. Rhodium is a rare, silvery-white metal that belongs to the platinum group metals (PGMs), which also includes platinum, palladium, iridium, osmium, and ruthenium. Rhodium is known for its exceptional properties, such as high melting and boiling points, excellent … nerf sawtoothWebThe Great Dyke is one of the most remarkable geological features known. Over five hundred kiolmetres long and rarely more than ten wide, it traverses the Archean Shield … its technologies ltdWebSouth African Journal of Geology, 104(4), 319-342. ... Platinum-Group Element Mineralisation in the Great Dyke, Zimbabwe, and its Relationship to Magma Evolution and Magma Chamber Structure. South African Journal of Geology, 104:319-342; Nashwa, Velaphi Moses. "The flotation of high talc-containing ore from the Great Dyke of … nerf scartchWebJul 20, 1998 · Great Dyke, narrow series of long, low ridges and hills in Zimbabwe, trending for about 320 miles (515 km). Consisting of four igneous complexes, they increase in … nerfs bulbairesWebthe Great Dyke and for gneisses and granitoids of the Zimbabwe Craton that can place limits on the amount of crustal contamination as well as help deciphering the involvement … nerfs bassinWebZimbabwe’s Great Dyke, running vertically through the center of this scene, probably formed slowly, over centuries, as molten rock forced its way up from the Earth’s … nerf scholarships