scholarly journals The Bouse Formation, a controversial Neogene archive of the evolving Colorado River: a scientific drilling workshop report (28 February–3 March 2019 – BlueWater Resort & Casino, Parker, AZ, USA)

2019 ◽  
Vol 26 ◽  
pp. 59-67
Author(s):  
Andrew Cohen ◽  
Colleen Cassidy ◽  
Ryan Crow ◽  
Jordon Bright ◽  
Laura Crossey ◽  
...  
Keyword(s):  
Gulf Of California ◽  
Colorado River ◽  
River System ◽  
Workshop Report ◽  
Scientific Drilling ◽  
Fine Grained ◽  
Continental Scale ◽  
The World ◽  
History Of ◽  
Intense Debate

Abstract. Neogene deposits of the lower Colorado River valley, especially the Miocene(?) and early Pliocene Bouse Formation, have been the focus of intense debate regarding the early paleoenvironmental history of this important continental-scale river system in southwestern North America and its integration with the proto-Gulf of California. Fine-grained units within these Neogene deposits also hold a promising archive of Pliocene paleoclimate history for this part of the world. Because the depocenter deposits of the Bouse Formation and the deposits that overlie and underlie it are poorly exposed and highly weathered, the formation is ripe for study through collection of drill cores. A workshop was held 28 February–3 March 2019 in Parker, AZ, USA, to discuss how scientific drilling might be employed to help resolve the Bouse controversies and improve our understanding of paleoclimate history in the region.

scholarly journals ĐẶC ĐIỂM HỆ THỐNG SÔNG CỔ VÀ TÁC ĐỘNG NHÂN SINH DỰA TRÊN KẾT QUẢ MÔ HÌNH TIẾN HÓA TỈ LỆ LỚN KHU VỰC CHÂU THỔ SÔNG HỒNG

2020 ◽  
Vol 19 (4) ◽  
pp. 463-478
Author(s):  
Mai Duc Dong ◽  
Phung Van Phach ◽  
Nguyen Trung Thanh ◽  
Duong Quoc Hung ◽  
Pham Quoc Hiep ◽  
...  
Keyword(s):  
Late Pleistocene ◽  
River System ◽  
River Network ◽  
River Delta ◽  
Red River ◽  
River Systems ◽  
Red River Delta ◽  
The World ◽  
History Of

The Simclast model has been verified and applied effectively in simulating the delta development for some major deltas in the world. In this study, we applied the model Simclast for simulating the history of the Red river delta development in late Pleistocene-Holocene. Results of the model reveal that the mainland of study area had reduced rapidly during transgression period (10,000-8,000 BP). The morphology changed significantly in the paleo-Red and Day river systems, but slightly in the paleo Thai Binh river system. The paleo-river network had been active in upper part before 11,000 BP and then shifted seaward until 2,000 BP. The river-sea interaction causes erosion and accumulation; as a result the morphology changed remarkably. The paleo-Thai Binh river had been inactive until 5,500 BP and then it was active but the morphology had not varied remarkably. The recent coastline generated from Simclast is relatively in accordance with the present coastline.

Application of the Commercial approach

2020 ◽  
pp. 81-102
Author(s):  
S. Nazrul Islam
Keyword(s):  
Soviet Union ◽  
Former Soviet Union ◽  
Colorado River ◽  
River System ◽  
The United States ◽  
Aral Sea ◽  
Amu Darya ◽  
The World ◽  
Terrestrial Biodiversity ◽  
Syr Darya

Chapter 4 provides a few case studies of rivers to illustrate the consequences of the Commercial approach. These rivers are: the Colorado River of the United States; the Murray-Darling river system of Australia; the Amu Darya and Syr Darya of the former Soviet Union; the Nile River of Africa; and the Indus River of South Asia. It shows that in each case, the application of the Commercial approach has led to river fragmentation and excessive withdrawal of water, leading to exhaustion of rivers, which in turn led to salinity intrusion and erosion, subsidence, and desiccation of the deltas. The ecology of the river basins has been damaged, including loss of aquatic and terrestrial biodiversity. In case of the Amu Darya and Syr Darya Rivers, this damage includes the destruction of the Aral Sea, once considered the second-largest inland waterbody of the world. In each case, the Commercial approach has led to conflicts among co-riparian countries.

scholarly journals Evaluating the Shinumo-Sespe drainage connection: Arguments against the “old” (70–17 Ma) Grand Canyon models for Colorado Plateau drainage evolution

Geosphere ◽  
2020 ◽  
Vol 16 (6) ◽  
pp. 1425-1456
Author(s):  
Karl E. Karlstrom ◽  
Carl E. Jacobson ◽  
Kurt E. Sundell ◽  
Athena Eyster ◽  
Ron Blakey ◽  
...  
Keyword(s):  
Detrital Zircon ◽  
Gulf Of California ◽  
Colorado Plateau ◽  
Grand Canyon ◽  
River System ◽  
Death Valley ◽  
Transverse Ranges ◽  
Drainage Connection ◽  
The Pacific ◽  
History Of

Abstract The provocative hypothesis that the Shinumo Sandstone in the depths of Grand Canyon was the source for clasts of orthoquartzite in conglomerate of the Sespe Formation of coastal California, if verified, would indicate that a major river system flowed southwest from the Colorado Plateau to the Pacific Ocean prior to opening of the Gulf of California, and would imply that Grand Canyon had been carved to within a few hundred meters of its modern depth at the time of this drainage connection. The proposed Eocene Shinumo-Sespe connection, however, is not supported by detrital zircon nor paleomagnetic-inclination data and is refuted by thermochronology that shows that the Shinumo Sandstone of eastern Grand Canyon was >60 °C (∼1.8 km deep) and hence not incised at this time. A proposed 20 Ma (Miocene) Shinumo-Sespe drainage connection based on clasts in the Sespe Formation is also refuted. We point out numerous caveats and non-unique interpretations of paleomagnetic data from clasts. Further, our detrital zircon analysis requires diverse sources for Sespe clasts, with better statistical matches for the four “most-Shinumo-like” Sespe clasts with quartzites of the Big Bear Group and Ontario Ridge metasedimentary succession of the Transverse Ranges, Horse Thief Springs Formation from Death Valley, and Troy Quartzite of central Arizona. Diverse thermochronologic and geologic data also refute a Miocene river pathway through western Grand Canyon and Grand Wash trough. Thus, Sespe clasts do not require a drainage connection from Grand Canyon or the Colorado Plateau and provide no constraints for the history of carving of Grand Canyon. Instead, abundant evidence refutes the “old” (70–17 Ma) Grand Canyon models and supports a <6 Ma Grand Canyon.

scholarly journals Generation of a Historical Weapon Ge and Its Impacts on Huaxia Culture

2018 ◽  
Vol 10 (1) ◽  
pp. 57
Author(s):  
Zhuo Lu
Keyword(s):  
River System ◽  
Han Dynasty ◽  
Ancient China ◽  
Euphrates River ◽  
Western Han Dynasty ◽  
Chinese Nation ◽  
The World ◽  
Depth Study ◽  
History Of

The history of Huaxia (Chinese: , a historical concept representing the Chinese nation and civi-lization) is full of wars. Various weapons were developed that are suitable for ground combat with horse-drawn vehicles. The weapon Ge (Chinese: ) was already used before 221 BC (before the Qin Dynasty, ca. 221–206 BC), and disappeared in around 25 AD (at the end of Western Han Dynasty). In most other regions in the world, this type of weapon has hardly been used. The weapon axe was used in the ancient wars (in the same period) outside Ancient China (also called the Middle King-dom), such as in Mesopotamia (the area of the Tigris–Euphrates river system). However, the weapon axe is different from Ge, although there seem some similarities. This article provides an in-depth study and analysis of the reasons for the historic use of this unique weapon Ge, of its development in Ancient China, and of its influence on (military and civil) culture.

scholarly journals Cenozoic incision history of the Little Colorado River: Its role in carving Grand Canyon and onset of rapid incision in the past ca. 2 Ma in the Colorado River System

Geosphere ◽  
2016 ◽  
Vol 13 (1) ◽  
pp. 49-81 ◽  
Author(s):  
K.E. Karlstrom ◽  
L.J. Crossey ◽  
E. Embid ◽  
R. Crow ◽  
M. Heizler ◽  
...  
Keyword(s):  
Colorado River ◽  
Grand Canyon ◽  
River System ◽  
The Past ◽  
History Of

Eocene–Recent drainage evolution of the Colorado River and its precursor: an integrated provenance perspective from SW California

2018 ◽  
Vol 488 (1) ◽  
pp. 47-72 ◽  
Author(s):  
Uisdean Nicholson ◽  
Andrew Carter ◽  
Paula Robinson ◽  
David I. M. Macdonald
Keyword(s):  
Colorado River ◽  
Colorado Plateau ◽  
River System ◽  
Large River ◽  
Detrital Zircons ◽  
Heavy Mineral ◽  
Continental Scale ◽  
The North ◽  
Sediment Routing ◽  
The Usa

AbstractThe Colorado River in the SW of the USA is one of Earth's few continental-scale rivers with an active margin delta. Deformation along this transform margin, as well as associated intra-plate strain, has resulted in significant changes in sediment routing from the continental interior and post-depositional translation of older deltaic units. The oldest candidate deposits, fluvial sandstones of the Eocene Sespe Group, are now exposed in the Santa Monica Mountains, 300 km to the north of the Colorado River. Heavy mineral data from this basin indicate that sediment was sourced by a large river system, with some affinity to the early Pliocene Colorado River, but was unlikely to have been integrated across the Colorado Plateau. Sedimentological and mineralogical evidence from the earliest (c. 5.3 Ma) unequivocal Colorado River-derived sediments in the Salton Trough provide evidence for a rapid transition from locally derived sedimentation. Lack of evidence for a precursor phase of suspended-load sediment suggests that drainage capture took place in a proximal position, favouring a ‘top-down’ process of lake spillover. Following drainage integration, significant changes in heavy mineral assemblages of fluvio-deltaic sediments, particularly evident from apatite–tourmaline and garnet–zircon indices, as well as U–Pb ages of detrital zircons, document the integration of the fluvial system to its present form and progressive incision of the Colorado Plateau from the Miocene to the present.

A History of the World Semiconductor Industry

IEE Review ◽  
1991 ◽  
Vol 37 (10) ◽  
pp. 355
Author(s):  
D.A. Gorham
Keyword(s):  
Semiconductor Industry ◽  
The World ◽  
History Of

The problem of periodization of the history of religion

1997 ◽  
pp. 3-8
Author(s):  
Borys Lobovyk
Keyword(s):  
Religious Studies ◽  
Human Being ◽  
Religious Development ◽  
History Of Religion ◽  
The Social ◽  
The World ◽  
History Of ◽  
Role Of Religion

An important problem of religious studies, the history of religion as a branch of knowledge is the periodization process of the development of religious phenomenon. It is precisely here, as in focus, that the question of the essence and meaning of the religious development of the human being of the world, the origin of beliefs and cult, the reasons for the changes in them, the place and role of religion in the social and spiritual process, etc., are converging.

Mülteci olmak: Mersin’de yaşayan Filistinli mültecilerin göç hikâyeleri

2016 ◽  
Vol 3 (2) ◽  
pp. 200-224
Author(s):  
Bilge Deniz Çatak
Keyword(s):  
Oral History ◽  
Daily Life ◽  
Palestinian Refugees ◽  
Emotional Bonds ◽  
The World ◽  
History Of ◽  
Oral History Interviews ◽  
Refugee Experience

Filistin tarihinde yaşanan 1948 ve 1967 savaşları, binlerce Filistinlinin başka ülkelere göç etmesine neden olmuştur. Günümüzde, dünya genelinde yaşayan Filistinli mülteci sayısının beş milyonu aştığı tahmin edilmektedir. Ülkelerine geri dönemeyen Filistinlilerin mültecilik deneyimleri uzun bir geçmişe sahiptir ve köklerinden koparılma duygusu ile iç içe geçmiştir. Mersin’de bulunan Filistinlilerin zorunlu olarak çıktıkları göç yollarında yaşadıklarının ve mülteci olarak günlük hayatta karşılaştıkları zorlukların Filistinli kimlikleri üzerindeki etkisi sözlü tarih yöntemi ile incelenmiştir. Farklı kuşaklardan sekiz Filistinli mülteci ile yapılan görüşmelerde, dünyanın farklı bölgelerinde mülteci olarak yaşama deneyiminin, Filistinlilerin ulusal bağlılıklarına zarar vermediği görülmüştür. Filistin, mültecilerin yaşamlarında gelenekler, değerler ve duygusal bağlar ile devam etmektedir. Mültecilerin Filistin’den ayrılırken yanlarına aldıkları anahtar, tapu ve toprak gibi nesnelerin saklanıyor olması, Filistin’e olan bağlılığın devam ettiğinin işaretlerinden biridir.ABSTRACT IN ENGLISHPalestinian refugees’ lives in MersinIn the history of Palestine, 1948 and 1967 wars have caused fleeing of thousands of Palestinians to other countries. At the present time, its estimated that the number of Palestinian refugees worldwide exceeds five million. The refugee experience of Palestinians who can not return their homeland has a long history and intertwine with feeling of deracination. Oral history interviews were conducted on the effects of the displacement and struggles of daily life as a refugee on the identity of Palestinians who have been living in Mersin (city of Turkey). After interviews were conducted with eight refugees from different generations concluded that being a refugee in the various parts of the world have not destroyed the national entity of the Palestinians. Palestine has preserved in refugees’ life with its traditions, its values, and its emotional bonds. Keeping keys, deeds and soil which they took with them when they departed from Palestine, proving their belonging to Palestine.

Sign in / Sign up

Export Citation Format

Share Document