Chrono-stratigraphy of the youngest (last 1500 years) rhyolitic eruptions of Lipari (Aeolian Islands, Southern Italy) and implications for distal tephra correlations
نویسندگان
چکیده
The youngest (last 1500 years) volcanic eruptions of Lipari, within the Aeolian Archipelago, produced prominent pumice cone Monte Pilato and obsidian lava flows Rocche Rosse Forgia Vecchia, concentrated in north-eastern sector island as well highly dispersed white-coloured, fine-grained tephra layers rhyolitic composition terrestrial marine settings on regional scale. Here we describe detail stratigraphy pyroclastic successions erupted by different vents - Pilato, Lami, combining field observations, sedimentological characteristics deposits, major trace element compositions glass. All materials consist aphyric lapilli ash with a largely homogeneous composition. Vecchia deposits primarily vesicular fragments subordinate clasts, whilst Lami are characterized moderately juvenile more significant fraction obsidian. also contains peculiar clasts fibrous texture breadcrust bombs. Stratigraphic relationships, paleomagnetic 14C ages combined archaeological information historical reports, enabling us to provide an accurate chrono-stratigraphic framework for Lipari. Following 8th century CE eruption which flow, activity resumed second half 13th explosive that culminated emission bilobate flow. This was shortly followed Rosse, latter concluded widely renowned By integrating geochemistry new chronological scheme, our work facilitates refinement proximal-to-distal correlation Lipari's continental environments central Mediterranean area last years. A fine-grained, found Stromboli (~40 km NE from Lipari) has origin thus, constrains dispersion towards NE. Very similar beds southwards interlayered near-source La Fossa, Vulcano (~10 exhibit features consistent younger activities eruption. possible link between previously identified cores Ionian Sea postulated, although age textural these distal not univocal indicating either or Vecchia.
منابع مشابه
the innovation of a statistical model to estimate dependable rainfall (dr) and develop it for determination and classification of drought and wet years of iran
آب حاصل از بارش منبع تأمین نیازهای بی شمار جانداران به ویژه انسان است و هرگونه کاهش در کم و کیف آن مستقیماً حیات موجودات زنده را تحت تأثیر منفی قرار می دهد. نوسان سال به سال بارش از ویژگی های اساسی و بسیار مهم بارش های سالانه ایران محسوب می شود که آثار زیان بار آن در تمام عرصه های اقتصادی، اجتماعی و حتی سیاسی- امنیتی به نحوی منعکس می شود. چون میزان آب ناشی از بارش یکی از مولفه های اصلی برنامه ...
15 صفحه اولstudy of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
the use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach
abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...
15 صفحه اولnano-rods zno as an efficient catalyst for the synthesis of chromene phosphonates, direct amidation and formylation of amines
چکیده ندارد.
construction and validation of the translation teacher competency test and the scale of students’ perceptions of translation teachers
the major purpose of this study was to develop the translation teacher competency test (ttct) and examine its construct and predictive validity. the present study was conducted in two phases: a qualitative phase as well as a quantitative phase. in the first phase of the study, the author attempted to find out the major areas of competency required for an academic translation teacher. the second...
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: Journal of Volcanology and Geothermal Research
سال: 2021
ISSN: ['0377-0273', '1872-6097']
DOI: https://doi.org/10.1016/j.jvolgeores.2021.107397