نتایج جستجو برای: travertine deposits
تعداد نتایج: 28658 فیلتر نتایج به سال:
Identification of sea-level proxies is important for reconstruction of past sea-level variation. Methods for reconstructing Holocene relative sea-level curves are crucial for quantification of the impact of Greenland ice thickness variation on global sea level and vertical land movement. Arctic beach ridges constitute important potential archives of sea-level variation. However, their surface m...
The lack of fossil tetrapod bearing deposits in the earliest Carboniferous ('Romer's Gap') has provoked some recent discussions regarding the proximal cause, with three explanations being offered: environmental, taphonomic, and collection failure. One of the few, and earliest, windows into this time is the locality of Blue Beach exposed in the Tournaisian deposits at Horton Bluff lying along th...
Tephra is a product of large and explosive volcanic events and can travel thousands of kilometers before deposition. Consequently, tephra deposits are common in terrestrial, lacustrine, marine, and glacial environments. Because tephra deposition is a geologically synchronous event, tephras constitute important isochrones in the Quaternary sequence, not only in Japan but also throughout the nort...
Plant macrofossils and pollen play complementary roles in paleoecology. Each has its own advantages and shortcomings. Used separately, they provide valuable information about past vegetation. Used together, the two types of data can corroborate or, occasionally, challenge each other, and they can provide more detailed and refined understanding of past vegetation at multiple spatial scales. In t...
OBJECTIVE To assess clinicopathological characteristics of lupus nephritis patients with scanty immune deposits. METHODS The data of patients with scanty immune deposits lupus nephritis were retrospectively analyzed. Plasma ANCA and complement components were detected. RESULTS Among 316 cases with renal biopsy-proven lupus nephritis, 40 cases were diagnosed as scanty immune deposits. There ...
The study of microbial mats in extreme environments is high scientific interest from geological, ecological, and geomicrobiological aspects. These represent multilayer bio-structures where each taxonomic group dominates a specific vertical layering distribution resulting its growth metabolic activity. In the present study, hot spring environment Aedipsos (Euboea Island, Greece) creation thermog...
However, in the case of deposits, the situation is more complex. At least two kinds of deposits should be distinguished: transferable deposits (“money”) and non-transferable deposits (“financial capital”). This is necessary because the services provided are different in both cases. Services provided in connection with “money” include, in principle, the transfer of these deposits in order to han...
پژوهش حاضر به بررسی نقش عوامل اقتصادی و بانکداری الکترونیک بر حجم سپرده های بانک های خصوصی منتخب (بانک اقتصادنوین، سامان، پارسیان، پاسارگاد و ملت) طی دوره زمانی 1386 لغایت 1393 می پردازد. بدین منظور سپرده ها به دو بخش قرض الحسنه و جاری و سپرده های بلندمدت تقسیم و از روش داده های ترکیبی در برآورد مدل ها استفاده شده است. نتایج حاصل از تخمین مدل برای سپرده های قرض الحسنه و جاری نشان داد که متغیرها...
the spatial distribution of mineralization is the foremost concern in regional exploration and it could be considered as a very important tool in the investigation of mineral deposits. there are several data manipulation methods by which the data can be evaluated. fry analysis is a good method to determine the direction(s) of maximum continuity of the deposits and could be used in different typ...
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