PALYNOLOGICAL ASPECTS OF THE PERMO-TRIASSIC SEQUENCE IN THE SUBSURFACE OF ISRAEL.
Item
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Title
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PALYNOLOGICAL ASPECTS OF THE PERMO-TRIASSIC SEQUENCE IN THE SUBSURFACE OF ISRAEL.
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Identifier
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AAI8713758
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identifier
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8713758
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Creator
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ESHET, YORAM.
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Contributor
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Daniel Habib | Harold Cousminer
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Date
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1987
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Language
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English
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Publisher
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City University of New York.
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Subject
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Geology
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Abstract
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A palynostratigraphic study of the Permo-Triassic sequence in the subsurface of Israel resulted in the identification of seven interval zones in the following ascending order: (I) Potoniesporites novicus Zone (Early Permian); (II) Lueckisporites virkkiae Zone (Late Permian); (III) Endosporites papillatus Zone (Early Triassic); (IV) Aratrisporites saturni Zone (Anisian); (V) Podosporites amicus Zone (Ladinian); (VI) Patinasporites densus Zone (Carnian); (VII) Rhaetogonyaulax rhaetica Zone (Rhaeto-Norian).;Although a complete sequence of palynozones is found across the Permian-Triassic boundary in most of the boreholes, the occurrence of an hiatus is suggested by the pattern of extinctions and type of lithology at the transitional zone. A definite unconformity at the Permian-Triassic boundary has been identified in the Zuk Tamrur 1 well.;A study of the geographic distribution of selected taxa resulted in the definition of three discrete provinces at different times during the Permo-Triassic. Provincialism in the south was found to be more prominent.;The content of reworked organic particles was found to be high in regressive intervals, while a low content characterizes the transgressive ones. This is offered as an efficient tool for the identification of transgressions and regressions.;A paleoclimatic model, used in this study, indicated a mixture of arid and humid niches during the Middle Triassic, and arid conditions in the Late Triassic (Carnian).;Rhythmic alternations in assemblage composition found in Early Permian intervals probably indicate rhythmic climatic or sedimentologic changes in depositional environments.;The entire Permo-Triassic sequence is within the oil window in northern Israel. In the south, the Upper Triassic is immature and only the older intervals are within the oil window. None of the studied boreholes has reached the over-mature zone. Kerogen is composed essentially of woody and other terrestrial particles. Only few samples were rich in amorphous algal organic matter.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
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Program
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Earth and Environmental Sciences
