Early Jurassic palynomorphs from the Adigrat Sandstone in well Abred-1, Ogaden, Ethiopia PDF Download
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Author: Otfried Hankel
Publisher: GRIN Verlag
ISBN: 3656357196
Category : Science
Languages : en
Pages : 15
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Book Description
Scientific Study from the year 2013 in the subject Geography / Earth Science - Geology, Mineralogy, Soil Science, , language: English, abstract: Palynomorphs have been recovered from the Adigrat Sandstone in the subsurface of the southeastern Ogaden region of Ethiopia. Core samples from well Abred-1 have yielded rich and well-preserved assemblages which are characterized by the dominance of the pollen genus Classopollis (average frequency 93%). Significant accessory elements are Anapiculatisporites dawsonensis, Ceratosporites helidonensis, Foraminisporis tribulosus, Nevesisporites vallatus, Retitriletes semimuris, Araucariacites australis, Callialasporites turbatus, and Perinopollenites elatoides. The microflora can be correlated with the lower part of the Corollina torosa Zone of Australia. It is concluded, therefore, that the studied section is of Hettangian or Sinemurian age. Continental deposition of the Adigrat Sandstone occurred probably under hot and dry climatic conditions. The presence of small numbers of acritarchs indicates a restricted marine influence.
Author: Otfried Hankel
Publisher: GRIN Verlag
ISBN: 3656357196
Category : Science
Languages : en
Pages : 15
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Book Description
Scientific Study from the year 2013 in the subject Geography / Earth Science - Geology, Mineralogy, Soil Science, , language: English, abstract: Palynomorphs have been recovered from the Adigrat Sandstone in the subsurface of the southeastern Ogaden region of Ethiopia. Core samples from well Abred-1 have yielded rich and well-preserved assemblages which are characterized by the dominance of the pollen genus Classopollis (average frequency 93%). Significant accessory elements are Anapiculatisporites dawsonensis, Ceratosporites helidonensis, Foraminisporis tribulosus, Nevesisporites vallatus, Retitriletes semimuris, Araucariacites australis, Callialasporites turbatus, and Perinopollenites elatoides. The microflora can be correlated with the lower part of the Corollina torosa Zone of Australia. It is concluded, therefore, that the studied section is of Hettangian or Sinemurian age. Continental deposition of the Adigrat Sandstone occurred probably under hot and dry climatic conditions. The presence of small numbers of acritarchs indicates a restricted marine influence.
Author: R. Lee Hadden
Publisher: www.Militarybookshop.CompanyUK
ISBN: 9781780391854
Category : Nature
Languages : en
Pages : 432
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Book Description
This bibliography on the geographical, water and geological information ofSomalia was begun to fill a request for current information on that war tornstate. This bibliography brings together selected citations from a variety ofdifferent cartographic, geographical, geological and hydrological resourcesand a number of specialized library collections. Most of the citations havelocation information on where these items can be located and either used onsite, or borrowed through inter-library loan, or where copies of the itemscan be purchased from the originating source, or through commercial documentdelivery services.
Author: Heinz Schandelmeier
Publisher: CRC Press
ISBN: 1351445243
Category : Science
Languages : en
Pages : 622
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Book Description
This volume focuses on approaches towards a better understanding of the geological, hydrogeological and paleoclimatic evolution of Northeast Africa. Among the topics discussed are Phanerozoic interplate dynamics, sedimentology and stratigraphy, and mineral deposits and metallogeny.
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 888
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Book Description
Author: L. Candela
Publisher:
ISBN:
Category : Agricultural pollution
Languages : en
Pages : 256
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Author: Samir El-Gaby
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 384
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Book Description
Author: Harold D. Nelson
Publisher:
ISBN:
Category : Somalia
Languages : en
Pages : 374
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Book Description
General study on Somalia - covers history, revolutionary social change, physical geography, demographic aspects, social structure, Islamic religious practice, education, refugees, economy, agriculture, trade, government, legal system, politics, international relations, defence, etc. Bibliography, glossary, maps, photographs, statistical tables.
