Journal of the Geological Society
SCIE-ISI SCOPUS (1845-1931,1933-2023)
2041-479X
0016-7649
Anh Quốc
Cơ quản chủ quản: Geological Society of London , GEOLOGICAL SOC PUBL HOUSE
Lĩnh vực:
Geology
Các bài báo tiêu biểu
Tectonic models for accretion of the Central Asian Orogenic Belt
The Central Asian Orogenic Belt (
c
. 1000–250 Ma) formed by accretion of island arcs, ophiolites, oceanic islands, seamounts, accretionary wedges, oceanic plateaux and microcontinents in a manner comparable with that of circum-Pacific Mesozoic–Cenozoic accretionary orogens. Palaeomagnetic and palaeofloral data indicate that e... ...
Tập 164 Số 1 - Trang 31-47 - 2007
Fault rocks and fault mechanismsPhysical factors likely to affect the genesis of the various fault rocks—frictional properties, temperature, effective stress normal to the fault and differential stress—are examined in relation to the energy budget of fault zones, the main velocity modes of faulting and the type of faulting, whether thrust, wrench, or normal. In a conceptual model of a major fault zone cutting crystalline... ...
Tập 133 Số 3 - Trang 191-213 - 1977
Zircon U-Pb ages for the Early Cambrian time-scale
Single zircons from two Early Cambrian volcanic horizons have been analysed using the SHRIMP ion microprobe. Full details of the analytical procedures and data reduction are given. Zircons from tuff within the Lie de Vin Formation, near Tiout, Morocco, show little spread in U-Pb age and have a mean value of 521 ± 7 Ma (2σ). Those from a bentonite within unit 5 of the Meishucun... ...
Tập 149 Số 2 - Trang 171-184 - 1992
Tectonic environment of the Devonian Gramscatho basin, south Cornwall: framework mode and geochemical evidence from turbiditic sandstonesThe Portscatho Formation, within the allochthonous unit of the Middle and Upper Devonian Gramscatho Group, is a thick sequence of deep-water sandstones and interbedded slates deposited by southerly-derived turbidity currents into the Gramscatho basin of south Cornwall. Throughout an approximately 3.5 km thick sequence, the Portscatho Formation is petrographically and chemically coherent, e... ...
Tập 144 Số 4 - Trang 531-542 - 1987
Seismic pumping—a hydrothermal fluid transport mechanismA consequence of the dilatancy/fluid-diffusion mechanism for shallow earthquakes is that considerable volumes of fluid are rapidly redistributed in the crust following seismic faulting. This is borne out by the outpourings of warm groundwater which have been observed along fault traces following some moderate (M5–M7) earthquakes. The quantities of fluid involved are such that significant h... ...
Tập 131 Số 6 - Trang 653-659 - 1975
The petrological evolution of island arc systemsThe most important petrological problem relating to the development of island arc systems is the origin of the basalt-andesite-dacite-rhyolite volcanic suite. Characteristics of the suite are reviewed. They include distribution of active volcanoes relative to Benioff zones, chemical composition and fractionation trends of magmas, the evolutionary development of island arcs in time, often c... ...
Tập 130 Số 3 - Trang 183-204 - 1974
Volcanism, CO 2 and palaeoclimate: a Late Jurassic–Early Cretaceous carbon and oxygen isotope record
A composite Tethyan Late Jurassic–Early Cretaceous carbon and oxygen isotope curve is presented. C-isotope data provide information on the evolution and perturbation of the global carbon cycle. O-isotope data are used as a palaeotemperature proxy in combination with palaeontological information. The resulting trends in climate and in palaeoceanography are compared with biocalc... ...
Tập 161 Số 4 - Trang 695-702 - 2004
The role of the Indian summer monsoon and the mid-latitude westerlies in Himalayan glaciation: review and speculative discussion
New dates for late Quaternary glaciations in the Himalayas show that, during the last glacial cycle, glaciations were not synchronous throughout the region. Rather, in some areas glaciers reached their maxima at the global glacial maximum of
c.
18–20 ka
bp
, whereas in others glaciers... ...
Tập 155 Số 2 - Trang 353-363 - 1998
Carbon-isotope stratigraphy recorded by the Cenomanian–Turonian Oceanic Anoxic Event: correlation and implications based on three key localities
We present new, detailed carbon-isotope records for bulk carbonate, total organic carbon (TOC) and phytane from three key sections spanning the Cenomanian–Turonian boundary interval (Eastbourne, England; Gubbio, Italy; Tarfaya, Morocco), with the purpose of establishing a common chemostratigraphic framework for Oceanic Anoxic Event (OAE) 2. Isotope curves from all localities a... ...
Tập 161 Số 4 - Trang 711-719 - 2004
The geochemistry of young volcanism throughout western Panama and southeastern Costa Rica: an overviewOblique aseismic subduction below western Panama and southeastern Costa Rica has produced Recent arc-related volcanism. The aseismicity is probably related to the subduction of relatively hot oceanic lithosphere. The volcanism throughout this region over the past 2 Ma has been quite distinct, consisting of felsic magmas (andesites to rhyolites but mainly dacites) with geochemical signature... ...
Tập 149 Số 4 - Trang 569-579 - 1992