Lead and Neodymium Isotope Systematics of the Kidd Creek Mine Stratigraphic Sequence and Ore, Abitibi Subprovince, Canada

Author(s):  
A. O. Marnila

Geragai graben is located in the South Sumatera Basin. It was formed by mega sequence tectonic process with various stratigraphic sequence from land and marine sedimentation. One of the overpressure indication zones in the Geragai graben is in the Gumai Formation, where the sedimentation is dominated by fine grained sand and shale with low porosity and permeability. The aim of the study is to localize the overpressure zone and to analyze the overpressure mechanism on the Gumai Formation. The Eaton method was used to determine pore pressure value using wireline log data, pressure data (RFT/FIT), and well report. The significant reversal of sonic and porosity log is indicating an overpressure presence. The cross-plot analysis of velocity vs density and fluid type data from well reports were used to analyze the causes of overpressure in the Gumai Formation. The overpressure in Gumai Formation of Geragai graben is divided into two zones, they are in the upper level and lower level of the Gumai Formation. Low overpressure have occurred in the Upper Gumai Formation and mild overpressure on the Lower Gumai Formation. Based on the analyzed data, it could be predicted, that the overpressure mechanism in the Upper Gumai Formation might have been caused by a hydrocarbon buoyancy, whereas in the Lower Gumai Formation, might have been caused by disequilibrium compaction as a result of massive shale sequence.


2017 ◽  
Author(s):  
Sara Callegaro ◽  
◽  
Andrea Marzoli ◽  
Hervé Bertrand ◽  
Janne Blichert-Toft ◽  
...  

2017 ◽  
Author(s):  
Paul Beguelin ◽  
◽  
Michael Bizimis ◽  
Eleanor Carmen McIntosh ◽  
Brian Cousens ◽  
...  

Author(s):  
Martijn Klaver ◽  
Scott A. MacLennan ◽  
Mauricio Ibañez-Mejia ◽  
François L.H. Tissot ◽  
Pieter Z. Vroon ◽  
...  

2021 ◽  
Vol 564 ◽  
pp. 116928
Author(s):  
Mingming Zhang ◽  
Céline Defouilloy ◽  
David J. Joswiak ◽  
Donald E. Brownlee ◽  
Daisuke Nakashima ◽  
...  

2021 ◽  
pp. 104123
Author(s):  
Chonghao Liu ◽  
Jiajun Liu ◽  
Emmanuel John M. Carranza ◽  
Jianping Wang ◽  
Degao Zhai ◽  
...  

2021 ◽  
Vol 299 ◽  
pp. 199-218 ◽  
Author(s):  
Noël Chaumard ◽  
Céline Defouilloy ◽  
Andreas T. Hertwig ◽  
Noriko T. Kita

2020 ◽  
Vol 47 (2) ◽  
pp. 215-286
Author(s):  
Alexander E. Sollee ◽  
Hannah Mönninghoff ◽  
Ekin Kozal ◽  
Doğa Karakaya ◽  
Joëlle Heim ◽  
...  

AbstractThe site of Sirkeli Höyük in the province of Adana in modern Turkey is one of the largest settlement mounds in Plain Cilicia. In 2012, a geophysical survey revealed that the ancient settlement was not confined to the höyük, but also encompassed an extensive lower town to the southeast of the main mound. To gain information on the dating and development of this part of the settlement, an excavation area (“Sector F”) was opened at a spot where the magnetometry survey suggested the presence of a city gate. Since then, archaeological work in this area has continuously produced new discoveries that help us understand how this residential area and its inhabitants developed throughout the periods of its occupation. Especially the Iron Age (Neo Cilician period) levels, which cover approximately the 11th–7th centuries B.C., provide important information on how this urban center of the Neo Hittite kingdom Hiyawa/Que changed over time and to which extent historical events impacted the people living in one of its residential areas. This contribution discusses the stratigraphic sequence, the pottery, and the archaeobotanical remains discovered in Sector F during the 2013–2019 campaigns, and concludes with a synthesis of the development in this area from a historical perspective.


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