نتایج جستجو برای: koppeh dagh basin

تعداد نتایج: 57086  

2004
Leonid Polyak William B. Curry Dennis A. Darby Jens Bischof Thomas M. Cronin

Distinct cyclicity in lithology and microfaunal distribution in sediment cores from the Mendeleev Ridge in the western Arctic Ocean (water depths ca. 1.5 km) reflects contrasting glacial/interglacial sedimentary patterns. We conclude that during major glaciations extremely thick pack ice or ice shelves covered the western Arctic Ocean and its circulation was restricted in comparison with interg...

Journal: :Ground water 2017
Mark R Williams Anthony R Buda Kamini Singha Gordon J Folmar Herschel A Elliott John P Schmidt

Delineating hydrologic and pedogenic factors influencing groundwater flow in riparian zones is central in understanding pathways of water and nutrient transport. In this study, we combined two-dimensional time-lapse electrical resistivity imaging (ERI) (depth of investigation approximately 2 m) with hydrometric monitoring to examine hydrological processes in the riparian area of FD-36, a small ...

Journal: :Applied and environmental microbiology 2007
Ricardo Santos João Fernandes Nuno Fernandes Fernanda Oliveira Manuela Cadete

Mycobacterium parascrofulaceum was found in Norris Geyser Basin, Yellowstone National Park, in a system composed of two acidic (pH 3.0) springs with temperatures between 56 degrees C at the source and 40 degrees C at the confluence of both springs. Growth and survival assays at 56 degrees C for 60 days were performed, confirming the origin of the strain.

2002
Barry Ryan

This article forms pan of an ongoing study of the coal and coalbed methane resource potential of northwestern British Columbia. Other areas under study include the Bower basin coalfield, Telkwa coalfield and Tertiary coalfields of the Bulkley Valley. Tertiary sediments survive in many major watersheds in British Columbia. The sediments are generally not well consolidated, poorly exposed and the...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2013
J D N Paranhos V L S Almeida J P Silva Filho M N Paranaguá M Melo S Neumann-Leitão

The plankton fauna of the state of Piauí, Northeastern Brazil, especially in the Parnaíba basin, is still poorly known; the results of most studies of the subject have not been published and can only be found in grey literature (unpublished scientific works), such as course completion work and consulting reports. Thus, this paper presents data from samples taken recently from different water bo...

The Upper Jurassic carbonates of the eastern part of the Kopet-Dagh Basin, with thickness of 470 m, are the major gas-bearing reservoir in NE Iran. The objectives of this study are recognition of diagenetic history and estimation of porosity related to dolomitization. Based on field and laboratory study, four carbonate facies associations have been identified at the Mazdavand outcrop. Most of t...

Journal: :iranian journal of earth science 0
habib allah torshizian department of geology, islamic azad university, mashhad branch, mashhad, iran

the study area is located in the northeast of iran. miankuhi formation is 500m thick and comprises homogeneous shales, brown granular sandstone and siltstone. in this study, 45 samples were taken from miankuhi shales and sandstones in order to determine their tectonic origin by using a polarizing microscope. samples were analysed by x-ray fluorescence (xrf) method to determine their chemical co...

Journal: :رخساره های رسوبی 0
محسن علامه حبیب الله ترشیزیان نوید حبیب اللهی

sarcheshmeh formation is one the lower cretaceous formations of the kopet-dagh basin in the ne of iran. an outcrop of this formation in the section of daddanlou village was studied palynologically. the study section, 248 meters thick includs gray marl and gray shale, with interbeded limestone. based on study of 135 slides of 27 samples taken from this formation showed the most of the samples co...

Journal: Geopersia 2019

This article provides a background for scientists interested in a general overview of the geology and geomorphology of Turkmenistan. The basement of Turkmenistan is a complex amalgamation of arc-related terranes developed in the Asiatic and northern Paleotethys oceanic domains during Late Paleozoic to Triassic times. A major part of the country coincides with the Turan Platform, where a thick s...

Journal: :پژوهش های چینه نگاری و رسوب شناسی 0
azizolahe taheri hossien mosaddegh mahnaz amirshahkarami maryam mirshahani mohammad nabi gorgij maeyam motamedalshariati ebrahim ghasemi-nejad

â â â  â  â â â â â â â  abstract â  the abtalkh formation in the kopeh-dagh basin in northeastern iran with an age of late cretaceous (turonian – santonian) is selected to evaluate resolution of magnetic susceptibility for assessing sea level fluctuations. thirty-nine shale samples were collected and studied for magnetic susceptibility and palynology. assuming the average ms magnitude as the...

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