Results 21 to 30 of about 4,201,675 (269)

Multi-scale virtual field experience: sedimentology and stratigraphy of Grand Ledge, Michigan, USA [PDF]

open access: yesGeoscience Communication, 2021
Field experiences are a critical component of undergraduate geoscience education; however, traditional onsite field experiences are not always practical due to accessibility, and the popularity of alternative modes of learning in higher education is ...
M. S. Marshall, M. C. Higley
doaj   +1 more source

The stratigraphy and origin of the portaskaig boulder bed series (Dalradian) [PDF]

open access: yesGeological Journal, 1965
AbstractThe late Pre‐Cambrian Portaskaig Boulder Bed Series shows a very uniform sequence for some 600 km along the Caledonian strike, from Connemara on the west coast of Ireland to Aberdeenshire in Scotland. The Series, which is divided into four groups of beds, comprises numerous individual boulder beds separated by stratified sediments.
C. Kilburn   +2 more
openaire   +1 more source

Estimation of missing data in a geophysical series of precipitation

open access: yes, 2021
The analysis of dynamic systems is a topic of great interest in the basic sciences since it allows direct inference of the behavior of different systems. The study of physical phenomena provides large databases that, if recorded at regular time intervals,
GALLARDO PÉREZ, HENRY DE JESÚS   +2 more
core   +1 more source

Integrated Quaternary Stratigraphy

open access: yes, 2022
Stratigraphy Timescales, Volume Seven in the Advances in Sequence Stratigraphy series, covers research in stratigraphic disciplines, including the most recent developments in the geosciences.
Montenari, Michael
core   +7 more sources

Quaternary stratigraphic regionalization and comprehensive framework in Nanling and adjacent areas

open access: yes地质科技通报, 2021
The Quaternary sediments in the Nanling and adjacent areas are dominated by alluvial, eluvium and cave deposits, which have lacked of a unified stratigraphic and chronological framework.Based on the results of field survey and research on profiles, the ...
Yuanrun Shi   +4 more
doaj   +1 more source

Miaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden [PDF]

open access: yesEstonian Journal of Earth Sciences, 2021
The Cambrian succession of the Tingskullen drill core from northern Öland comprises Cambrian Series 2 and Miaolingian (Wuliuan Stage) siliciclastic strata.
Per Ahlberg   +5 more
doaj   +1 more source

Stable isotope stratigraphy of the early Quaternary of borehole Noordwijk, southern North Sea [PDF]

open access: yes, 2015
Between 2.58Ma and 2.4Ma, most of the present onshore sector of the Netherlands was an epicontinental sea. Previous studies suggest the occurrence of multiple cold and warm phases in shallow marine successions of the Maassluis Formation in conjunction ...
Munsterman, D. K.   +10 more
core   +2 more sources

Insights Into Magma Chamber Processes From the Relationship Between Fabric and Grain Shape in Troctolitic Cumulates

open access: yesFrontiers in Earth Science, 2020
The strength of foliations defined by shape preferred orientation of plagioclase in troctolitic cumulates from the Layered Series of the Skaergaard intrusion, and the Rum Eastern Layered Intrusion, increases as the grains become more tabular, due either ...
Marian B. Holness   +3 more
doaj   +1 more source

An integrated biostratigraphy and seismic stratigraphy for the late Neogene continental margin succession in northern Taranaki Basin, New Zealand [PDF]

open access: yes, 2006
Our aim has been to develop an integrated biostratigraphy and seismic stratigraphy for the Pliocene and Pleistocene formations (Ariki, Mangaa, Giant Foresets) in northern Taranaki Basin to better understand the evolution of the modern continental margin ...
Kamp, Peter J.J.   +3 more
core   +1 more source

Boninite and boninite-series volcanics in northern Zambales ophiolite: doubly vergent subduction initiation along Philippine Sea plate margins [PDF]

open access: yesSolid Earth, 2018
A key component of subduction initiation rock suites is boninite, a high-magnesium andesite that is uniquely predominant in western Pacific forearc terranes and in select Tethyan ophiolites such as Oman and Troodos. We report, for the first time, the
A. Perez   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy