Investigating fossil hydrothermal systems by means of fluid inclusions and stable isotopes in banded travertine: an example from Castelnuovo dell’Abate (southern Tuscany, Italy)
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چکیده
منابع مشابه
Tracking changing environments using stable carbon isotopes in fossil tooth enamel: an example from the South African hominin sites.
The environmental contexts of the karstic hominin sites in South Africa have been established largely by means of faunal associations; taken together these data suggest a trend from relatively closed and more mesic to open, drier environments from about 3 to 1.5 Ma. Vrba argued for a major shift within this trend ca. 2.4-2.6 Ma, an influential proposal that posited links between bovid (and homi...
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کاتالیست یک سنتز جدید برای تیواترها توصیف شده است. واکنش الکل ها با آریل، هتروآریل و آلکیل تیو ل ها درحضور 1،3،5- تری آزو- 2،4،6- تری فسفرین-2،2،4،4،6،6 هگزاکلراید ((tapc به عنوان یک کاتالیست موُثر، بازده های خوب تا عالی از تیواترها را حاصل می کند. علاوه براین، واکنش تحت شرایط بدون فلز و بدون حلال پیش می رود، بنابراین یک مکمل جالب برای روش های شناخته شده سنتز تیواترها ارائه می دهد. یک مکانیسم ا...
15 صفحه اولUrsus etruscus Cuvier, 1823 from the Early Pleistocene of Monte Argentario (Southern Tuscany, Central Italy)
Ursus etruscus fossils have been recovered in the Monte Argentario site (late Villafranchian, Early Pleistocene, Tuscany). Teeth and bones show the typical morphology of the Etruscan bear. The occurrence of this species in the Early Pleistocene Monte Argentario faunal assemblage and other coeval sites (i.e. Pirro Nord) is very important in the framework of the Early Pleistocene biochronology. T...
متن کاملAge Constraints and Denudation Rate of a Multistage Fault Line Scarp: an Example from Southern Italy
The morphological evolution of a carbonate fault line scarp from southern Italy, generated by transpressional faulting and evolved by slope replacement, has been reconstructed. C dating of faulted slope deposits (ages included between 18 ka and ~8 ka BP) have been performed to constrain the Late Pleistocene — Holocene evolution of that scarp. Longto short-term denudation rates have been also ev...
متن کاملdevelopment and implementation of an optimized control strategy for induction machine in an electric vehicle
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
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ژورنال
عنوان ژورنال: International Journal of Earth Sciences
سال: 2015
ISSN: 1437-3254,1437-3262
DOI: 10.1007/s00531-015-1186-y