scholarly journals Reconstructing the tectono-sedimentary evolution of the Early– Middle Jurassic Tlaxiaco Basin in southern Mexico: New insights into the crustal attenuation history of southern North America during Pangea breakup

Geosphere ◽  
2021 ◽  
Author(s):  
Mildred Zepeda-Martínez ◽  
Michelangelo Martini ◽  
Luigi A. Solari ◽  
Claudia C. Mendoza-Rosales

During Pangea breakup, several Jurassic extensional to transtensional basins were developed all around the world. The boundaries of these basins are major structures that accommodated continental extension during Jurassic time. Therefore, reconstructing the geometry of Jurassic basins is a key factor in identifying the major faults that produced continental attenuation during Pangea breakup. We reconstruct the tectono-sedimentary evolution of the Jurassic Tlaxiaco Basin in southern Mexico using sedimentologic, petrographic, and U-Pb geochronologic data. We show that the northern boundary of the Tlaxiaco Basin was an area of high relief composed of the Paleozoic Acatlán Complex, which was drained to the south by a set of alluvial fans. The WNW-trending Salado River–Axutla fault is exposed directly to the north of the northernmost fan exposures, and it is interpreted as the Jurassic structure that controlled the tectono-sedimentary evolution of the Tlaxiaco Basin at its northern boundary. The eastern boundary is represented by a topographic high composed of the Proterozoic Oaxacan Complex, which was exhumed along the NNW-trending Caltepec fault and was drained to the west by a major meandering river called the Tlaxiaco River. Data presented in this work suggest that continental extension during Pangea breakup was accommodated in Mexico not only by NNW-trending faults associated with the development of the Tamaulipas–Chiapas transform and the opening of the Gulf of Mexico, but also by WNW-trending structures. Our work offers a new perspective for future studies that aim to reconstruct the breakup evolution of western equatorial Pangea.

2021 ◽  
Author(s):  
M. Zepeda-Martínez ◽  
et al.

<div>File A: Point-counting raw data and recalculated parameters for whole-rock sandstone petrography. File B: Details of analytical methodology and analytical results for individual zircon ages. <br></div>


Author(s):  
Garth Fowden

This book examines history and thought “before and after Muhammad” by offering a new perspective on the debate about “the West and the Rest,” about America's destiny and Europe's identity. One party explains how Europe and eventually North America—the North Atlantic world—left the rest in the dust from about 1500. The other side argues that Asia—China, Japan, and the Islamic trio of Mughals, Safavids, and Ottomans—remained largely free of European encroachment until the mid-1700s, but then either collapsed for internal reasons, or else were gradually undermined by colonial powers' superior technological, economic, and military power. In seeking to overhaul the foundations of this debate, especially as regards the role of Islam and the Islamic world, the book reformulates the history of the First Millennium, by the end of which Islam had matured sufficiently to be compared with patristic Christianity, in order to fit Islam into it. The book draws primarily on Edward Gibbon's account of East Rome and Islam.


2021 ◽  
Author(s):  
M. Zepeda-Martínez ◽  
et al.

<div>File A: Point-counting raw data and recalculated parameters for whole-rock sandstone petrography. File B: Details of analytical methodology and analytical results for individual zircon ages. <br></div>


2017 ◽  
Vol 24 (2-3) ◽  
pp. 233-258
Author(s):  
Jeongran Yoon

This article complicates the traditional narrative of anti-Communist Christians in Korea, examining the history of anti-communism among them in light of their claims to support democracy and development. Changes in Christian thinking in Korea followed the end of formal fighting in the Korean War. The conflict transformed Korea’s post-colonial history into a developmental struggle, pitting communism versus capitalism in a deadly battle. From the mid-1950s, South Korean Protestants saw the struggle as a competition between two systems, not simply one to eradicate the North Korean regime. From this new perspective, they began condemning political injustice and corruption under President Syngman Rhee. The contradictions in the ideas of Christians were partly embodied in their support for the civil uprising that would topple the Rhee regime, but also in their endorsement of Park Chung-hee’s military takeover in 1961. South Korean Protestants assisted the coup’s central leadership and helped a totalitarian regime come to power. This paradoxical aspect within Korean Protestant history is closely tied to the unique characteristics of its anti-communism and how it evolved after the Korean War.


Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.


2020 ◽  
pp. 37-40

Genetic variety examination has demonstrated fundamental to the understanding of the epidemiological and developmental history of Papillomavirus (HPV), for the development of accurate diagnostic tests and for efficient vaccine design. The HPV nucleotide diversity has been investigated widely among high-risk HPV types. To make the nucleotide sequence of HPV and do the virus database in Thi-Qar province, and compare sequences of our isolates with previously described isolates from around the world and then draw its phylogenetic tree, this study done. A total of 6 breast formalin-fixed paraffin-embedded (FFPE) of the female patients were included in the study, divided as 4 FFPE malignant tumor and 2 FFPE of benign tumor. The PCR technique was implemented to detect the presence of HPV in breast tissue, and the real-time PCR used to determinant HPV genotypes, then determined a complete nucleotide sequence of HPV of L1 capsid gene, and draw its phylogenetic tree. The nucleotide sequencing finding detects a number of substitution mutation (SNPs) in (L1) gene, which have not been designated before, were identified once in this study population, and revealed that the HPV16 strains have the evolutionary relationship with the South African race, while, the HPV33 and HPV6 showing the evolutionary association with the North American and East Asian race, respectively.


2015 ◽  
Vol 44 (2) ◽  
pp. 29-30
Author(s):  
Matt Sheedy

I interviewed Russell McCutcheon back in March 2015, about his new role as president of the North American Association for the Study of Religion (NAASR), asking him about the history of the organization, goals for his tenure, and developments for NAASR’s upcoming conference in Atlanta in November 2015.


Sign in / Sign up

Export Citation Format

Share Document