Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains

نویسندگان

چکیده

The Amazonia biome hosts upland closed and open vegetation ecosystems, in which the current biogeographical patterns relate to evolution of physical landscape. Therefore, understanding origin timing substrates supporting different ecosystems is indispensable for better comprehension Amazonian biogeography. Here we used quartz optically stimulated luminescence (OSL) thermally transferred (TT-OSL) dating sandy environments Central Eastern Amazonia, from both outcrop drill core samples (Autazes core: PBAT-15-43). These present ages ranging 1 ka up almost 2 Ma, that were primarily interpreted as depositional fluvial terraces. Moreover, are discussed terms potential geomorphic processes leading formation substrates, such soil mixing apparent age parent bedrock. coupling between OSL TT-OSL techniques allow us date sedimentary deposits covering whole Quaternary, implies a new time window history.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Luminescence dating of glaciofluvial deposits linked to the penultimate glaciation in the Eastern Alps

During the penultimate glaciation vast areas of the Alps were glaciated, with piedmont glaciers protruding into the foreland. In the easternmost part of the northward draining valleys of the Alps, the glaciers did not reach the foreland, but formed valley glaciers confined by the mountainous terrain. This also applies to the Ybbs valley, where samples for luminescence dating out of glaciofluvia...

متن کامل

Use of luminescence dating in archaeology

With improvements in methodology and instrumentation, luminescence dating is becoming a much more useful chronometric tool in archaeology. Procedures for dating ceramics are relatively routine and their accuracy has been demonstrated in a number of studies. Research is aimed at applying ceramic dating in situations where other methods lack the direct dating ability of luminescence to resolve ch...

متن کامل

the role of russia in transmission of energy from central asia and caucuses to european union

پس ازفروپاشی شوروی،رشد منابع نفت و گاز، آسیای میانه و قفقاز را در یک بازی ژئوپلتیکی انرژی قرار داده است. با در نظر گرفتن این منابع هیدروکربنی، این منطقه به یک میدانجنگ و رقابت تجاری برای بازی های ژئوپلتیکی قدرت های بزرگ جهانی تبدیل شده است. روسیه منطقه را به عنوان حیات خلوت خود تلقی نموده و علاقمند به حفظ حضورش می باشد تا همانند گذشته گاز طبیعی را به وسیله خط لوله مرکزی دریافت و به عنوان یک واس...

15 صفحه اول

Monumentality in the Mekong Delta: Luminescence Dating and Implications

Brick monuments are one hallmark of emergent political complexity across much of mainland Southeast Asia during the first millennium AD. They first appeared in association with Indic statuary, large nucleated settlements, and the region's earliest states. Chronometric research in the Mekong delta on the earthen and brick wall that surrounds Angkor Borei (southern Cambodia) provides some of the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Frontiers in Earth Science

سال: 2022

ISSN: ['2296-6463']

DOI: https://doi.org/10.3389/feart.2022.888443