Results 21 to 30 of about 76,911 (338)

Long-term change of the eruption activities of Sakurajima volcano, Japan, inferred from the fallout tephra deposits

Frontiers in Earth Science, 2022
Stratigraphic analysis of fallout tephra deposits in and around a volcano provides a framework for understanding the long-term temporal change in the volcano’s activities.
Ayumu Nishihara, Ayumu Nishihara, Nobuo Geshi, Hideto Naruo   +3 more
doaj   +1 more source

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

Estonian 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, Frans Lundberg, Mikael Calner, Oliver Lehnert, Peter Dahlqvist, Michael M. Joachimski   +5 more
doaj   +1 more source

Quaternary stratigraphic regionalization and comprehensive framework in Nanling and adjacent areas

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, Xiao Lin, Yadong Xu, Shuchao Yu, Qingquan Sun   +4 more
doaj   +1 more source

The Salittu Formation in southwestern Finland, part I: Structure, age and stratigraphy [PDF]

Bulletin of the Geological Society of Finland, 2016
Because of the relatively low metamorphic grade, low strain and well-preserved early structures in volcanic and volcaniclastic rocks, the Orijärvi triangle (in the center of the larger Orijärvi area) is one of the few locations in the Svecofennian orogen
M. Nironen, I. Mänttäri, M. Väisänen
doaj   +1 more source

Sharp‐based shoreface successions reconsidered in three‐dimensions: A forward stratigraphic modelling perspective

The Depositional Record, 2022
Sea‐level fall is commonly inferred to generate a sharp‐based shoreface succession that displays an abrupt vertical transition from heterolithic, lower shoreface to sandy, upper shoreface deposits across a marine erosion surface.
Brian J. Willis, Tao Sun, R. Bruce Ainsworth   +2 more
doaj   +1 more source

Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]

, 2001
The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Aharon P., Anthony E. Fallick, Anton B. Kuznetsov, Bowring S.A., Brand U., Brasier M.D., Brasier M.D., Brasier M.D., Burns S.J., Calver C.R., Corsetti F.A., Fairchild I.J., Fairchild I.J., Gao G., Gorokhov I.M., Gorokhov I.M., Gorokhov I.M., Grotzinger J.P., Grotzinger J.P., Hoffman P.F., Igor M. Gorokhov, Kaufman A.J., Kennedy M.J., Kirschvink J.L., Knoll A.H., Knoll A.H., Knoll A.H., Kupecz J.A., Kuznetsov A.B., Kuznetsov A.B., Lambert I.B., Magaritz M., McArthur J.M., McArthur J.M., McCulloch M.T., Melezhik V.A., Morton J.P., Ovchinnikova G.V., Pelechaty S.M., Podkovyrov V.N., Pokrovsky B.G., Pokrovsky B.G., Pokrovsky B.G., Saylor B.Z., Semikhatov M.A., Singh U., Smith L.H., Tronnes R.G., Tucker M.E., Tucker M.E., Veizer J., Veizer J., Victor A. Melezhik, Wada S.-I., Walter M.R., Wang Da-Rui   +55 more
core   +1 more source

Marine Isotope Stages: Oxygen Isotope Stratigraphy

, 2022
versión ...
Bardají, Teresa, Lario Gómez, Javier
openaire   +2 more sources

Cladistics and Stratigraphy

Geosciences, 2023
Using cladistic phylogenies (cladograms) to evaluate stratigraphy (taxon distributions and correlations) necessitates various assumptions that include all of the assumptions built into the cladogram, assuming the cladogram is “correct” and that new taxa ...
Spencer G. Lucas
doaj   +1 more source

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

, 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 ...
Armentrout JM, Armstrong PA, Bé AWH, Bé AWH, Crundwell MP, Hansen RJ, Hayward BW, Hayward BW, Hornibrook NdeB, Hoskins RH, Hoskins RH, Mitchum RM, Murray JW, Pilaar WFH, Shell BP, Strong CP, Vail PR, Waghorn DB   +17 more
core   +2 more sources

Stratigraphy of Tithonian (Ohauan-Puaroan ) marine beds near Port Waikato, New Zealand, and a redescription of Belemnopsis aucklandica (Hochstetter). [PDF]

, 2001
Some 1500 m of marine Ohauan and Puaroan strata in the Port Waikato region of New Zealand are restudied in an attempt to resolve lithostratigraphic and biostratigraphic anomalies in published works.
Challinor, A.B.
core   +2 more sources