Download or read book Lithofacies Depositional Environments and Regional Stratigraphy of the Lower Eocene Ghazij Formation Balochistan Pakistan written by Edward Allison Johnson and published by . This book was released on 1999 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1984 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1999-07 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications of the U S Geological Survey written by and published by . This book was released on 1998 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1999 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lithofacies Attributes Depositional Environments Biostratigraphy and Cyclicity of the Lockhart Limestone Upper Indus Basin Northern Pakistan written by Ahmad Khan and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Indian Subcontinent contained a wide shallow marine continental shelf during most of the Paleocene and Eocene epochs before its collision with Eurasia. The Indus Basin formed the Pakistani portion of the subcontinent where carbonate deposition was prominent. The Lockhart Limestone is among the carbonate-dominated lithologic units developed in the Indus Basin. The latter has been divided into sub-basins due to the tectonic disturbance related to the Indian-Eurasian collision. In the northern part of the Indus Basin, the sub-basins Kohat, Potwar and Hazara constitute the upper Indus Basin. The study area is located in the Potwar and Hazara sub-basins. The Lockhart Limestone overlies early Paleocene Hangu Formation and is overlain by latest Paleocene to early Eocene Patala Formation, both with confirmable contacts. The Lockhart Limestone is 50 meters thick in the Potwar Sub-basin and 85 meters thick in the Hazara Sub-basin. Seven sections, three from Hazara area and four from Potwar area were studied for lithofacies characteristics, depositional environment, biostratigraphy, cyclicity and sequence stratigraphy of the Lockhart Limestone. The different lithofacies occur in different stratigraphic horizons that constitute the formation; they include fossiliferous calcareous shale (Lf1), planktonic-bearing mudstone (Lf2), Discocyclina-Ranikothalia wackestone (Lf3), mixed benthic foraminiferal wackestone-packstone (Lf4), Lockhartia-Miscellanea wackestone-packstone (Lf5) algal-foraminiferal wackestone-packstone (Lf6) and milliolid-bearing mudstone (Lf7). These lithofacies accumulated in subtidal conditions as suggested by their lithologic properties, fossil content and absence of intertidal and supratidal signatures. However, the vertical arrangement of these facies make cyclicity, as each cycle contains different lithofacies that change from deeper to shallower facies ii (A, B, C& D). The depositional setting is a ramp-type platform in which Lf1, Lf2 and Lf3 represent the deepest facies (outer ramp) followed by Lf3, Lf4 and Lf5 accumulated in the middle ramp, and finally by Lf6 and Lf7 of the inner ramp setting. Some of the larger benthic foraminifera are good index fossils that are useful for biostratigraphic age determination. These index fossils include Lockhartia conditi, L. haimei, Miscellanea miscella, Ranikothalia sindensis, and Discocyclina sp, which indicate Thanatian SBZ 3 & 4 (58 -56.5 Ma) age for the formation. Nine meter-scale shallowing-upward (Milankovitch) cycles were recognized from the Lockhart Limestone. In conjunction with the underline Hangu Formation and overlying Patala Formation, two transgressiveregressive cycles (TR-1 and TR-2) divide the HLP cycle in two parts. The Lockhart Limestone with the upper part of underlying Hangu Formation and the lower to middle part of overlying Patala Formation were deposited in a single 3rd order cycle (the HLP cycle).

Download or read book Mud and Mudstones written by Paul E. Potter and published by Springer Science & Business Media. This book was released on 2005-06-08 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clear writing and analysis of the broad spectrum of processes that produce shale are coupled with well-captioned 150 illustrations, 40 tables, boxed technical details, glossary and appendices. Recounts the step-by-step evolution and stages of shal, enabling readers to master the basics and to dig yet deeper into their origin, practical implications and relationship to earth history. Background information appears in appendices (Clay Mineralogy, Isotopes, Petrology, etc.); technicial details in high-lighted boxes, and definitions of 300+ terms in the Glossary.

Download or read book Ichnology Newsletter written by and published by . This book was released on 2001 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biotic changes in terrestrial environments around the Eocene Oligocene transition written by Lucja A. Fostowicz-Frelik and published by Frontiers Media SA. This book was released on 2023-11-09 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acta Mineralogica Pakistanica written by and published by . This book was released on 1999 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lithofacies and Palynostratigraphy of Some Cretaceous and Paleocene Rocks Surghar and Salt Range Coal Fields Northern Pakistan written by Peter D. Warwick and published by . This book was released on 1995 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report includes discussions on the lithofacies, depositional environments, palynobiostratigraphy, coal quality, and measured sections of Cretaceous and Paleocene strata of northern Pakistan.

Download or read book Mega fauna from the Ghazij Formation Lower Eocene Quetta Shahrig Area West Pakistan written by M. W. A. Iqbal and published by . This book was released on 1969 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cenozoic Vertebrate Tracks and Traces written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 2007 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distribution Thickness and Lithology of Paleocene Rocks in Pakistan written by Charles R. Meissner and published by . This book was released on 1973 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additional title page description: Thickness, clastic ratios, and sandstone-shale ratios are shown for Paleocene rocks of the Indus and Baluchistan Basins.

Download or read book Petroleum Abstracts written by and published by . This book was released on 1993 with total page 1752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Memoirs of the Geological Survey of Pakistan written by Geological Survey of Pakistan and published by . This book was released on 1972 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lithofacies Properties Biostratigraphy Cyclicity and Depositional Environment of the Margala Hill Limestone Hazara Basin Northern Pakistan written by Aman Ullah and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Margala Hill Limestone is a carbonate-dominated unit that occurs in the Kalla-Chitta, Hazara and Potwar basins in north Pakistan. This study addresses the lithofacies attributes, depositional setting, cyclicity, biostratigraphy and, sequence stratigraphy of the Margala Hill Limestone in the Hazara Basin. In the study area, the formation has an average thickness of 80 m; it conformably overlies the Paleocene-Eocene Patala Formation and is conformably overlain by the Early Eocene Chorgali Formation. The Margala Hill Limestone consists of bioclastic limestone lithofacies with subordinate gray to brownish gray, thin marl interbeds. The limestones are commonly grey, weathering pale grey, fine-to medium-grained, nodular, thinly to thickly bedded and rarely massive in nature. Four stratigraphic sections at, Goragali, Bharyan, Nathiagali and Kozagali, were studied in detail. Field data and petrographic analysis were used to create nine lithofacies (Mf1-Mf9) from the studied sections. These lithofacies includes miliolid Mudstone (Mf1), Algal-miliolid wackestone-packstone (Mf2), Bioclastic Packstone (Mf3), Nummulites-Assilina packstone-wackestone (Mf4), Nummulites-Discocyclina wackestone-packstone (Mf5), elongated Benthic Foraminifera wackestone (Mf6), Planktonic Foraminifera mudstone (Mf7), Bioclastic Marl Lithofacies (Mf8) and unfossiliferous Marl Lithofacies (Mf9). The Margala Hill Limestone was deposited in a quiet to moderately agitated ramp setting where lithofacies Mf1, Mf2 & Mf3 represents inner ramp, lithofacies Mf4, Mf5 & Mf8 represents middle ramp and lithofacies Mf6, Mf7 & Mf9 are outer ramp deposits. The vertical arrangements of these lithofacies suggest recurring subtidal shallowing-upward cycles (A, B and-C). Absence of intertidal and supratidal signatures further suggest a subtidal setting. The cycles range from 10-20 meters in thickness. The index fossils Nummulites atacicus, Nummulites globulus and Assilina laminosa indicates a the Middle Ilerdian 2/SBZ8 (54Ma-52.8Ma) age for the formation. Portion of Patala Formation, Margala Hill Limestone and Chorgali Formation were deposited as a single supercycle (the PMC supercycle). The supercycle is comprised of two 3rd-order Transgressive-Regressive depositional sequences (TR-1 & TR-2). The Margala Hill Limestone makes the middle part of the PMC supercycle and is comprised of seven, 4th-5th-order shallowing-upward cycles.