نتایج جستجو برای: appalachian orogen

تعداد نتایج: 3081  

J. MichalÌk

West Carpathian Mesozoic paleogeographic development indicates the effect of a left lateral shift of the Alpine- Carpathian microcontinent along the European shelf since the Early Jurassic. The evolution during Late Triassic/Early Jurassic was controlled by convergence along the border of the Meliata Ocean and by contemporaneous divergence along the Middle Atlantic/Penninic rift. During Mid-Cre...

Journal: :Frontiers in Earth Science 2021

The West Qinling orogen has played an important role in accommodating the deformation northeastern Tibetan Plateau induced by India-Eurasia convergence. Here we construct a vertical land motion (VLM) model based on latest leveling observations adjacent to orogen. Combined with horizontal field, crustal pattern this area is investigated. Additionally, slip rate and coupling coefficients of fault...

Journal: :International Journal of Earth Sciences 2013

Journal: :Online Journal of Rural Nursing and Health Care 2022

Purpose: The purpose of this study is to examine the relationship between telehealth use, satisfaction, and chronic medical conditions among residents living in Appalachian non-Appalachian communities. Sample: A COVID-19 public health survey was distributed via social media healthcare clinics tri-state region central Appalachia. Survey responses were limited adults aged ≥18 years who consented ...

2008
Nancy Riggs

19 Detrital-zircon analysis of sandstones interbedded with ca 464 Ma ignimbrites in 20 the lower Mweelrea Formation of the South Mayo Trough, western Ireland, 21 suggests Ordovician source-rock provenance that corresponds to two distinct 22 volcanic-arc phases on the Laurentian margin. East-derived sandstones contain a 23 suite of zircons with a mean age of ca 487 Ma that suggests derivation fr...

2007
NIGEL HARRIS

The movement of a low-viscosity crustal layer in response to topographic loading provides a potential mechanism for (1) eastward flow of the Asian lower crust causing the peripheral growth of the Tibetan Plateau and (2) southward flow of the Indian middle crust to be extruded along the Himalayan topographic front. Thermomechanical models for channel flow link such extrusion to focused orographi...

1998
Xiaoming Zhai Howard W. Day

The Qinling orogen (Fig. 1) extends for over 2000 km across central China, separating the Archean and Proterozoic Sino-Korean block in the north from the Proterozoic Yangtze block in the south. Although the orogen has been recognized as a continental collision zone for some time, the nature, age, and duration of the collision have been the subject of considerable debate (see review in Hacker et...

2007

Magnesite deposits in the Central Western Carpathians belong among the biggest deposits in the Europe. Their today’s structure is mainly the result of the Alpine orogenesis. During this period several deformation stages were active, which deformed the deposit body. This resulted in today’s complicated structure of the deposit. The genesis of deposit is still ambiguous; however, the importance o...

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