scholarly journals The Organic-Rich and Siliceous Bahloul Formation: Environmental Evolution Using Facies Analysis and Sr/Ca & Mn Chemostratigraphy, Bargou Area, Tunisia

10.5772/24391 ◽  
2011 ◽  
Author(s):  
Mohamed Soua ◽  
Hela Fakhfakh-Ben ◽  
Dalila Zaghbib-Turki ◽  
Jalel Smaoui ◽  
Mohsen Layeb ◽  
...  
Keyword(s):  
Facies Analysis ◽  
Environmental Evolution ◽  
Bahloul Formation

scholarly journals Environmental evolution of the Basque Coast Geopark estuaries (southern Bay of Biscay) during the last 10,000 years

2021 ◽  
pp. 103557
Author(s):  
Alejandro Cearreta ◽  
María Jesús Irabien ◽  
José E. Gómez Arozamena ◽  
Naima El bani Altuna ◽  
Aintzane Goffard ◽  
...  
Keyword(s):  
Bay Of Biscay ◽  
Environmental Evolution ◽  
Basque Coast

scholarly journals Lacustrine Slope-Related Soft-Sediment Deformation Structures in the Cretaceous Gyeokpori Formation, Buan Area, SW Korea, and Volcanism-Induced Seismic Shocks as Their Possible Trigger

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 721
Author(s):  
Ukhwan Byun ◽  
A.J. (Tom) van Loon ◽  
Kyoungtae Ko
Keyword(s):  
Facies Analysis ◽  
Deformation Mechanisms ◽  
Volcanic Area ◽  
Cohesive Sediments ◽  
Soft Sediment ◽  
Deformation Structures ◽  
Sediment Deformation ◽  
Soft Sediment Deformation ◽  
Siliciclastic Rocks ◽  
Sediment Layers

The Gyeokpori Formation in the Buan volcanic area primarily contains siliciclastic rocks interbedded with volcanoclastics. These sediments are characterized by a variety of soft-sediment deformation structures (SSDS). The SSDS in the Gyeokpori Formation are embedded in poorly sorted conglomerates; slump folds are also present in the formation. The deformation mechanisms and triggers causing the deformation are not yet clear. In the present study, the trigger of the SSDS in the Gyeokpori Formation was investigated using facies analysis. This included evaluation of the reworking process of both cohesive and non-cohesive sediments. The analysis indicates that the SSDS are directly or indirectly associated with the alternation of conglomerates and mud layers with clasts. These layers underwent non-cohesive and cohesive deformation, respectively, which promoted SSDS formation. The slump folds were controlled by the extent of cohesive and non-cohesive deformation experienced by the sediment layers in the slope environment. The SSDS deformation style and morphology differ, particularly in the case of reworking by slump activity. This study contributes to the understanding of lacustrine slope-related soft-sediment deformation structures.

scholarly journals Environmental evolution, faunal and human occupation since 2 Ma in the Anagni basin, central Italy

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fabio Florindo ◽  
Fabrizio Marra ◽  
Diego E. Angelucci ◽  
Italo Biddittu ◽  
Luciano Bruni ◽  
...  
Keyword(s):  
Central Italy ◽  
Time Frame ◽  
Archaeological Sites ◽  
Time Interval ◽  
Human Occupation ◽  
Environmental Evolution ◽  
Entire Interval ◽  
Field Surveys ◽  
Sedimentary Succession ◽  
Favorable Conditions

AbstractWe present the study of a composite, yet continuous sedimentary succession covering the time interval spanning 2.6–0.36 Ma in the intramontane basin of Anagni (central Italy) through a dedicated borecore, field surveys, and the review of previous data at the three palaeontological and archaeological sites of Colle Marino, Coste San Giacomo and Fontana Ranuccio. By combining the magneto- and chronostratigraphic data with sedimentologic and biostratigraphic analysis, we describe the palaeogeographic and tectonic evolution of this region during this entire interval. In this time frame, starting from 0.8 Ma, the progressive shallowing and temporary emersion of the large lacustrine basins and alluvial plains created favorable conditions for early hominin occupation of the area, as attested by abundant tool industry occurrences and fossils. This study provides new constraints to better interpret the hominin migratory dynamics and the factors that influenced the location and spatial distribution during the early occupation of this region.

The Nanshan Site in Mingxi County, Fujian

2019 ◽  
Vol 19 (1) ◽  
pp. 1-12
Keyword(s):  
Large Scale ◽  
Human Migration ◽  
Behavioral Models ◽  
Cultural Interaction ◽  
Environmental Evolution ◽  
Important Material ◽  
Archaeological Excavations

Abstract During the years 2012 to 2017, archaeological excavations were conducted at the localities of Cave 3, Cave 4 and Hilltop of the Nanshan (South Hill) Site. A total of 450sqm was excavated, revealing eight burials, two large-scale cisterns, about a dozen ash pits, and near 100 postholes. The excavation yielded more than 1000 artifacts made of pottery, stone and bone, as well as large amount of charred grains. The excavation uncovered important material for the discussion of prehistoric behavioral models, subsistence, human migration, cultural interaction, environmental evolution, the origins and development of the prehistoric cultures of Fujian and Taiwan, as well as the origin and dispersal of Austronesian groups.

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