passive margin


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passive margin

[′pas·iv ′mär·jən]
(geology)
A continental margin formed by rifting during continental breakup.
References in periodicals archive ?
The Zhob Valley Thrust translates the entire belt east and southeast over the Muslim Bagh-Zhob Ophiolite and western passive margin of the Indian Plate (Lawrence and Yeats, 1979; Lawrence et al.
From tectonics point of view, this province contains the overthrust and simple folded belts of Zagros which has been formed in the north-eastern part of Arabian plate's passive margin.
The KG- basin is a pericratonic ( area surrounding a stable plate of the earth's crust) passive margin basin, spread over more than 50,000 square kilometres in the Krishna and Godavari river basins of Andhra Pradesh.
The Ross Orogen as described by Stump (1995) is characterized by a passive margin as the result of Rodinia break-up during the Neoproterozoic, which includes the lower Cambrian Shackleton Limestone.
In 2007 a project was started to work with DZ in Northern Venezuela, sampling Cretaceous Passive Margin and Tertiary turbidite formations [1, 2].
Located at the southern east coast of India and the North Eastern Coast of Sri Lanka, it is a passive margin rift basin.
This middle volume discusses such topics as models for the evolution of passive margins, the Gulf of Suez rift basin, Lake Baikal, the development of the passive margin of eastern North America, and sedimentary basics of the late Mesozoic extensional domain of China and Mongolia.
The survey will total 25,000 km of long-offset data along the Northwest African Passive Margin.
The Paleozoic passive margin sequence preserved in Iberia provides first-order constraints for the evolution of the southern flank of the Rheic Ocean (Quesada 1990).
As the JOIDES Resolution criss-crossed the sea early this year from the coast of Sardinia southeast to the toe of Italy, scientists were looking at the evolution of the basin from two perspectives: They were investigating the history of the young passive margin, or continental edge, on the northwest side of the basin; and they were reconstructing the way the basin has opened at sites in the southeast over several million years.
The measured units are mainly composed ofthin to thick bedded sandstone with subordinate mudstone and occasional marls that were deposited in the western passive margin of the Indian Plate.
Figure 7 shows the shale and claystone units plot within the passive margin using a discriminant function diagram (Bhatia 1983).