Results 141 to 150 of about 394,950 (321)

Ceramic Production and Geodiversity in Iron Age Iberia: An Archaeometric Study of Pottery from Castrejón de Capote (SW Spain)

open access: yesArchaeometry, EarlyView.
ABSTRACT The hillfort of Castrejón de Capote is one of the best investigated settlements of Late Iron Age southwest Iberia. Located in the territory that the classical sources attributed to the Celtici, it was occupied between the early 4th and the 1st centuries bce.
Beatrijs de Groot   +2 more
wiley   +1 more source

Climatic changes recorded during the Jenkyns Event (Early Jurassic) in the lacustrine sediments of the Sichuan Basin (China)

open access: yesGeogaceta
The Toarcian lacustrine deposits of the Sichuan Basin (China) are represented mainly by silty marlstones and bivalve rich limestones disposed in decametric-scale thickening upwards sequences. Dense accumulations of bivalve shells are related to episodes
Matías Reolid   +7 more
doaj   +1 more source

40Ar-39Ar and Rb-Sr Geochronology

open access: yes, 2019
Fil: Camacho, A. Servicio Geológico Minero Argentino; Argentina.
openaire   +1 more source

(Table 5) Rb, Sr, Sm, and Nd concentrations and Sr and Nd isotopic compositions of basalts at DSDP Leg 74 Holes

open access: yes, 1984
(Table 5) Rb, Sr, Sm, and Nd concentrations and Sr and Nd isotopic compositions of basalts at DSDP Leg 74 ...
Erlank, A J   +7 more
core   +1 more source

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

open access: yesArchaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant   +6 more
wiley   +1 more source

A novel in-situ method for rubidium-strontium (Rb-Sr) dating of igneous rocks and minerals [PDF]

open access: yes, 2017
This item is only available electronically.The Rb-Sr isotopic system represents a popular geochronological tool for dating igneous rocks and minerals.
Jensen, L. M.
core  

(Table 5b) Results of Rb-Sr measurements in Upper Vendian clayey rocks of the Russian Platform from the borehole Nevel_1-R

open access: yes, 2005
(Table 5b) Results of Rb-Sr measurements in Upper Vendian clayey rocks of the Russian Platform from the borehole Nevel_1-
Bujakaite, M I   +13 more
core   +1 more source

Wari Lithic Technology on the Northern Coast of the Andes: Geochemical, 2D Geometric Morphometric, and Technological Analyses of Obsidian Bifaces From San José de Moro

open access: yesArchaeometry, EarlyView.
ABSTRACT This study examines Wari obsidian production in a cache of 39 bifaces found at the Late Moche site of San José de Moro (Jequetepeque Valley, North Coast of Peru, 700–850 ad). Portable X‐ray fluorescence, geometric morphometric, and technological analyses were used to investigate raw material provenance and bifacial production.
Antonio Pérez‐Balarezo   +2 more
wiley   +1 more source

Irving Rubenstein, Sr. Oral History (part 2)

open access: yes
Audio recording of Irving Rubenstein Sr., known as Mr. Ruby Sr, and his brother, Mr. Ruby, Jr. of Braeten and Braefair, Inc.

core  

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