scholarly journals About this title - The Middle and Late Jurassic Intrashelf Basin of the Eastern Arabian Peninsula

10.1144/m53 ◽  
2020 ◽  
Vol 53 (1) ◽  
pp. NP-NP

This Memoir provides a thorough regional synthesis of the geology of the rimmed Arabian Intrashelf Basin, reconciling differing interpretations of lithostratigraphy, sequence stratigraphy and biostratigraphy. Variation of energy levels and facies due to its setting in the SE palaeotradewind belt are described. The intrashelf basin formed during rising sea level as a single rimmed carbonate intrashelf basin. A possible global cooling phase resulted in a lowstand which restricted the basin, resulting in petrographically unique carbonate source rock facies dominated by cyanobacterial deposition. Two subsequent third-order carbonate sequences largely filled the basin. Eustatic change concomitant with uplift of the Tethys shelf resulted in alternation of carbonates and evaporites (gypsum-anhydrite) across the region. The end result was a sealed intrashelf basin which preserved early formed porosity and confined generated hydrocarbons within the intrashelf basin facies.

2014 ◽  
Author(s):  
Nayef Ibrahim Al-Mulhim ◽  
Ali Hussein Al-Saihati ◽  
Ahmed M. Hakami ◽  
Moataz Al-Harbi ◽  
Khalid Saeed Asiri

10.1144/m53.8 ◽  
2020 ◽  
Vol 53 (1) ◽  
pp. 197-205 ◽  
Author(s):  
A. O. Wilson

AbstractThis chapter summarizes the main conclusions in this Memoir. Included is a comparison of the Arabian Intrashelf Basin events to the Haq (2017) revision of the Jurassic sea level curve. One conclusion is that the Mid- to Late Jurassic Arabian Intrashelf Basin, with its stable tectonic setting during deposition, extensive present-day outcrops and subsurface well and seismic control, may be an ideal place to evaluate global changes during its time span. The last part of this chapter lists and discusses topics and questions raised within this Memoir which warrant further evaluation.


2020 ◽  
Vol 17 (6) ◽  
pp. 1491-1511
Author(s):  
Jun-Qing Chen ◽  
Xiong-Qi Pang ◽  
Song Wu ◽  
Zhuo-Heng Chen ◽  
Mei-Ling Hu ◽  
...  

AbstractHydrocarbon expulsion occurs only when pore fluid pressure due to hydrocarbon generation in source rock exceeds the force against migration in the adjacent carrier beds. Taking the Middle–Upper Ordovician carbonate source rock of Tarim Basin in China as an example, this paper proposes a method that identifies effective carbonate source rock based on the principles of mass balance. Data from the Well YW2 indicate that the Middle Ordovician Yijianfang Formation contains effective carbonate source rocks with low present-day TOC. Geological and geochemical analysis suggests that the hydrocarbons in the carbonate interval are likely self-generated and retained. Regular steranes from GC–MS analysis of oil extracts in this interval display similar features to those of the crude oil samples in Tabei area, indicating that the crude oil probably was migrated from the effective source rocks. By applying to other wells in the basin, the identified effective carbonate source rocks and non-source rock carbonates can be effectively identified and consistent with the actual exploration results, validating the method. Considering the contribution from the identified effective source rocks with low present-day TOC (TOCpd) is considered, the long-standing puzzle between the proved 3P oil reserves and estimated resources in the basin can be reasonably explained.


2012 ◽  
Vol 1479 ◽  
pp. 125-131
Author(s):  
J. G. Rojas-Briseño ◽  
J. C. Martínez-Orozco ◽  
I. Rodríguez-Vargas ◽  
C. A Duque ◽  
M. E. Mora-Ramos

ABSTRACTSemiconductor devices have been improved by using delta-doped quantum well (DDQW) of impurities due to the great amount of charge carriers it provides. The first proposals consisted of a DDQW close to the Schottky barrier potential in the gate terminal in a FET [1]. In this work we reported the energy levels spectrum for n-type double-DDQW with a Schottky barrier (SB) at their neighborhood in a Gallium Arsenide (GaAs) matrix. In addition to consider only the linear optical approximation we take into account the third order correction to the absorption coefficient and the refractive index change. We report those properties as a function of the Schottky Barrier Height (SBH), several separation distances between the DDQWs, and hydrostatic pressure effects. The results shown that the magnitude of intensity resonance peaks are controlled by the asymmetry of the DDQW+SB.


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