active margin

From: A Dictionary of Geography | Date: 2004| Author: | Copyright information

active margin A type of destructive plate margin characterized by ocean trenches , earthquakes , andesitic volcanic chains , and young fold ...

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Present-day stress orientation in Brunei: a snapshot of 'prograding tectonics' in a Tertiary delta
; ...deltas, as it has built up upon an active margin. Hence, structures observed in the...transpressive tectonics associated with the active margin, linage and dipmeter logs have been...basement stresses associated with the active margin. However, the maximum horizontal stress...
SHCP foresees less income in 2004.
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The role of the East Asian active margin in widespread extensional and strike-slip deformation in East Asia
; ...It is suggested that the East Asian active margin has influenced deformation in East...East Asia, modelling shows that the active margin can be held responsible for deformation...extension in the overriding plate along the active margin (Northrup et al. 1995). Dynamic modelling...
Age determination of Ordovician magmatism in NE Sardinia and its bearing on Variscan basement evolution
; ...internal Sardinian Variscides appear to have developed along an active margin, whereas the foreland correlates with the Ibero-Aquitaine...widespread and referred to a calc-alkaline suite from an active margin setting (Memmi et al. 1983). The orthogneisses in the internal...
Formation and reactivation of the Cambrian Kanmantoo Trough, SE Australia: Implications for early Palaeozoic tectonics at eastern Gondwana's plate margin
; ...continent. In contrast, west-directed subduction formed an active margin at contiguous parts of current Antarctica. Kanmantoo Group...Grenvillean province mixed with sediments eroded from the emergent active margin of Gondwana. The inception, localization and sedimentation...
A possible earthquake-triggered mega-boulder slide in a Chilean Mio-Pliocene marine sequence: evidence for rapid uplift and bonebed genesis
; Abstract: The type area of the Baha Inglesa Formation (north-central Chile) is structurally complex as a result of active margin subduction at the Peru-Chile Trench. Inliers of subaerially exposed Mesozoic igneous basement are unconformably overlain...
Terrane analysis along a Neoproterozoic active margin of Gondwana: insights from U-Pb zircon geochronology
; ...Cryogenian to Ediacaran (630-550 Ma) arc-related magmatic suites and coeval sedimentary successions that evolved along an active margin of Gondwana (e.g. Keppie et al. 2003, and references therein). Previous (760-660 Ma) arc activity is attributed to subduction...
Silurian-Devonian active-margin deep-marine systems and palaeogeography, Alai Range, Southern Tien Shan, Central Asia
; ...these insurmountable problems, we document the regional geology of the Lower Palaeozoic successions in terms of deep-marine active-margin depositional environments. The study area lies within the southern part of Kyrgyzstan, bordering Uzbekistan, Central Asia...
Margin Requirements, Margin Loans, and Margin Rates: Practice and Principles.(analysis of history of margin credit regulations)(Statistical Data Included)
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Middle Triassic radiolarians from West Timor, Indonesia
; ...Tetrarchiplagia compacta, and Planospinocyrtis kefaensis. INTRODUCTION THE EASTERN Sunda-Western Banda arc represents an active margin affected by a collision with the northwestern margin of Australia. During the last three decades, numerous contributions...