Geological Magazine
SCOPUS (1864-2025)SCIE-ISI
1469-5081
0016-7568
Anh Quốc
Cơ quản chủ quản: Cambridge University Press , CAMBRIDGE UNIV PRESS
Lĩnh vực:
Geology
Các bài báo tiêu biểu
The Mechanics of Oblique Slip FaultingSummary The various mechanisms which could cause oblique slip faulting are briefly reviewed. It is thought that such faulting may frequently arise from the existence of preferred planes of fracture within the rocks. The dynamics of this mechanism is studied in some detail and an expression is obtained for the first direction of slip within the plane under the influe... ...
Tập 96 Số 2 - Trang 109-117 - 1959
The origins of granulites: a metamorphic perspectiveAbstract Although many recent reviews emphasize a uniformity in granulite pressure–temperature (P –T ) conditions and paths, granulites in reality preserve a spectrum of important petrogenetic features which indicate diversity in their modes of formation. A thorough survey of over 90 granulite terranes or occurrenc... ...
Tập 126 Số 3 - Trang 215-247 - 1989
An Index of Weathering for Silicate RocksSummary An index of weathering for silicate rocks is proposed, based on the proportions of the alkali and alkaline earth metals present. These are considered to be the most mobile of the major elements. The bond strengths of the elements with oxygen are used as weighting factors in the index, which measures both the degree to which a rock has already been weathered ... ...
Tập 107 Số 6 - Trang 501-504 - 1970
Carbon- and oxygen-isotope stratigraphy of the English Chalk and Italian Scaglia and its palaeoclimatic significanceAbstract A detailed carbon- and oxygen-isotope stratigraphy has been generated from Upper Cretaceous coastal Chalk sections in southern England (East Kent; Culver Cliff, Isle of Wight; Eastbourne and Seaford Head, Sussex; Norfolk Coast) and the British Geological Survey (BGS) Trunch borehole, Norfolk. Data are also presented from a section through the Scaglia facies... ...
Tập 131 Số 1 - Trang 1-34 - 1994
Secular variation in Late Cretaceous carbon isotopes: a new δ13C carbonate reference curve for the Cenomanian–Campanian (99.6–70.6 Ma)Carbon stable-isotope variation through the Cenomanian–Santonian stages is characterized using data for 1769 bulk pelagic carbonate samples collected from seven Chalk successions in England. The sections show consistent stratigraphic trends and δ13 C values that provide a basis for high-resolution correlation. Positive and negative δ13 C excursions a... ...
Tập 143 Số 5 - Trang 561-608 - 2006
Precise Sm–Nd and U–Pb isotopic dating of the supergiant Shizhuyuan polymetallic deposit and its host granite, SE ChinaThe supergiant Shizhuyuan W–Sn–Bi–Mo deposit is hosted by the Qianlishan granite, a small, highly fractionated granitic pluton (∼10 km2 ) with multiple phases of intrusions within the Early Yanshanian granitoid province of SE China. Strong alteration of skarn and greisen that formed in the contact zone between the first and second phases of granite intrusions and Devoni... ...
Tập 141 Số 2 - Trang 225-231 - 2004
Evolution of Nigeria's Benue Trough (Aulacogen): a tectonic modelSummary The tectonic evolution of Nigeria's Benue Trough has recently been the focus of investigations, especially in relation to continental drift and opening of the South Atlantic Ocean during Cretaceous times. Most of the tectonic models presented for the Benue depression have placed undue emphasis on certain plate tectonic concepts which are inconsistent with th... ...
Tập 112 Số 6 - Trang 575-583 - 1975
A simple alkalinity ratio and its application to questions of non-orogenic granite genesisSUMMARY Commonly used variation diagrams do not convincingly distinguish strongly alkaline, alkaline and calc-alkaline rocks over the full range of silica contents, especially for more acid varieties. In particular, the Rittmann Suite Index, a, becomes invalid once SiO2 exceeds about 70%.
Tập 106 Số 4 - Trang 370-384 - 1969
A Model of the Structural Development of Israel and Adjacent Areas Since Upper Cretaceous TimesAbstract The rifting of the Red Sea, the folding of the Zagros-Taurus range (in Turkey and Iran), and the development of the structures in and near Israel appear to have resulted from a northward anti-clockwise rotational movement of Arabia, which occurred in several phases during Upper Cretaceous to Pleistocene times. The sinistral strike slip fault of the Dead Sea... ...
Tập 102 Số 3 - Trang 189-205 - 1965
Obduction, subduction and collision as reflected in the Upper Cretaceous–Lower Eocene sedimentary record of western TurkeyLate Cretaceous–Early Eocene Tethyan evolution of western Turkey is characterized by
ophiolite obduction, high-pressure/low-temperature metamorphism, subduction, arc magmatism and
continent–continent collision. The imprints of these events in the Upper Cretaceous–Lower Eocene
sedimentary record of western Anatolia are studied in thirty-eight well-described stratigraphic sections.
Durin... ...
Tập 138 Số 2 - Trang 117-142 - 2001