Fabiana Silvestri (Foraminiferida) from India, with notes on its global distribution
About: This article is published in Geological Magazine.The article was published on 1982-05-01. It has received None citations till now. The article focuses on the topics: Fabiana.
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TL;DR: In this paper, a synthesis of available stratigraphic and foraminiferal evidence from the upper Cretaceous-Eocene sequence of various parts of the India-Pakistan-Burma region is presented.
Abstract: A synthesis of the available stratigraphic and foraminiferal evidence from the upper Cretaceous-Eocene sequence of various parts of the India-Pakistan-Burma region "shows that there were four main cycles of deposition. Each cycle is shown to have started with a transgression and ended with a regression. Evidence of minor local regression is present in some places. The earliest of these cycles ended with the Maestrichtian, and this is taken to indicate the end of the Cretaceous period. The next cycle strated with the Danian, which is now placed in the lowermost Tertiary (basal Paleocene), and continued into the Ranikot stage (Paleocene). The third and fourth cycles began with the Laki and the Khirthar stages, respectively, the two cycles together representing the whole of the Eocene."
157 citations
TL;DR: The stratigraphy of the Melinau Limestone, a pure shallow-water carbonate deposit in north-east Sarawak with a maximum thickness of about 7000 ft, is described in this article.
Abstract: The stratigraphy of the Melinau Limestone, a pure shallow-water carbonate deposit in north-east Sarawak with a maximum thickness of about 7000 ft, is described. Dating of this sequence is based almost entirely on larger Foraminifera. The changing faunal succession from Upper Eocene through the Oligocene into the Lower Miocene is described and discussed. The probable conditions of deposition are considered and a correlation between the Melinau Limestone sequence and other limestone successions elsewhere in Sarawak is proposed. The criteria usually used for dating mid-Tertiary sediments of similar type in the Tethyan region are reviewed, and an attempt is made to correlate the Melinau succession with comparable successions elsewhere in Indonesia, the Pacific, India, and the Middle East. One new genus, Wilfordia, and three new species of Foraminifera, Dictyoconus melinauensis, Neoalveolina inflata, and Wilfordia sarawakensis, are described. Dictyoconus is recorded for the first time from strata of Oligocene age.
100 citations
35 citations
TL;DR: In this paper, the distribution of several stratigraphically important species is used to identify three distinct larger foraminiferal zones in the middle-upper Eocene succession of Garo hills, Assam, India.
Abstract: Based on the distribution of several stratigraphically important species three distinct larger foraminiferal zones are recognized in the middle-upper Eocene succession of Garo hills, Assam, India. A comparison of these zones with larger foraminiferal assemblages from other middle-upper Eocene successions in the Indian region is attempted and observations are made on the demarcation of the middle and upper Eocene boundary and the classification of the upper Eocene succession in this region.
11 citations
Additional excerpts
...This zone is correctable with Zone II in Garo Hills (Samanta, 1968) which was dated as late...
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TL;DR: In this article, three species of Discocyclina (s.s.), originally described from Indonesia, are recorded from the middle-upper Eocene beds of the Garo hills, Assam, eastern India.
Abstract: "Three species of Discocyclina (s.s.), . . . originally described from Indonesia, are recorded from the middle-upper Eocene beds of the Garo hills, Assam, eastern India. These three species are represented by abundant well-preserved material which permits a thorough study of the variations of their external as well as internal characters."
9 citations