Results 71 to 80 of about 1,851 (210)

A composite C-isotope profile for the Neoproterozoic Dalradian Supergroup of Scotland and Ireland [PDF]

, 2009
The Neoproterozoic Dalradian Supergroup is a dominantly siliciclastic metasedimentary succession in the Caledonian orogenic belt of Scotland and Ireland.
Fallick, A. E., Fallick, A.E., Prave, Tony, Graham, C.M., Thomas, C. W., Graham, C. M., Prave, A.R., Thomas, Christopher, Thomas, C.W.   +8 more
core   +1 more source

The Neoproterozoic Throssell Range Group, Western Australia: A Peri‐Marginal Continental Basin in Rodinia and Its Implications for the Centralian Superbasin

Basin Research, Volume 38, Issue 1, January–February 2026.
This study of recent exploration drillcore reveals two sequences separated by a disconformity. Basal alluvial fan to shallow marine lithofacies suggest reactivation of basement faults, and a distinct upwelling signature points to a flooded margin, controlled by differential subsidence of diverse Proterozoic lithosphere.
Ross B. Campbell, Peir K. Pufahl, Penelope Sinclair, Erin L. Martin, Lillian H. Cybulski, Urmidola Raye, Paul Polito, Rebecca Church, Marina Joury, Daniel Layton‐Matthews   +9 more
wiley   +1 more source

Global Upper Ordovician correlation by means of delta C-13 chemostratigraphy: implications of the discovery of the Guttenberg delta C-13 excursion (GICE) in Malaysia

, 2010
Apart from a single study of the early Katian delta C-13 chemostratigraphy in two regions in China, no investigations of the Sandbian and Katian chemostratigraphy have been published from anywhere in Asia.
Bergstroem, Stig M., Agematsu, Sachiko, Schmitz, Birger,, Lund University.   +3 more
core   +2 more sources

A Novel Intelligent Sedimentary Microfacies Identification Model Based on Limited Well‐Logging Data

International Journal of Intelligent Systems, Volume 2026, Issue 1, 2026.
Sedimentary microfacies identification is fundamental for reservoir characterization, directly influencing hydrocarbon exploration and production strategies. However, traditional methods relying on core analysis, seismic interpretation, and manual well‐log analysis face significant challenges: (1) high costs and limited coverage of coring data, (2 ...
Tianru Song, Weiyao Zhu, Hongqing Song, Ming Yue, Richard Murray   +4 more
wiley   +1 more source

Fluctuations of sea-water chemistry during Gargasian (Middle Aptian) time. Data from trace-element content (Mg, Sr, Mn, Fe) in hemipelagic carbonates from La Marcouline Quarry (Cassis, SE France)

Carnets de Géologie, 2007
In the Lower Aptian historical stratotype area (Cassis-La Bédoule, SE France), a geochemical study of the Gargasian (Middle Aptian) marl-limestone alternations of the La Marcouline quarry complements data already obtained from Bedoulian (Early Aptian ...
TRONCHETTI Guy, EMMANUEL Laurent, BELTRAN Catherine, MOULLADE Michel, RENARD Maurice, RAFELIS Marc de   +5 more
doaj  

A >70‐Myr‐Long Geomagnetic Field Reversal Hyperactivity Across the Ediacaran‐Cambrian Transition

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract The long‐term variation of the geomagnetic field is a key constraint for unraveling the geodynamo processes and the evolution of Earth's deep interior. However, the geomagnetic reversal pattern during the Ediacaran–Cambrian transition remains elusive. Here we present an integrated magneto‐ and cyclo‐stratigraphic study of a ∼1.8‐Myr‐long, late
Fuyun Shen, Bin Wen, Phil J. A. McCausland, Zheng Gong, Zongmin Zhu, Fangzheng Liu, Jingyi Wang   +6 more
wiley   +1 more source

SEQUENCE STRATIGRAPHY AND CHEMOSTRATIGRAPHY OF AN INCISED VALLEY FILL WITHIN THE CRETACEOUS BLACKHAWK FORMATION, BOOK CLIFFS, UTAH [PDF]

, 2012
A better constraint on the timing and depositional development of the incised valley fill (IVF) of the Desert Member of the upper Cretaceous Blackhawk Formation was needed to help understand the development of incised valley fills.
Cornwell, Christine Frasca
core  

Chemostratigraphic Approach to the Study of Resources’ Deposit in the Upper Silesian Coal Basin (Poland)

Energies
The Upper Silesian Coal Basin (USCB), located in southern Poland, is the major coal basin in Poland, and all technological types of hard coal, including coking coal, are exploited. It is also an area of high potential for coal-bed methane (CBM).
Ewa Krzeszowska
doaj   +1 more source

Application of chemostratigraphy to the Mungaroo Formation, the Gorgon field, offshore northwest Australia

, 2010
The Mungaroo Formation in the Gorgon Field is a stratigraphically complex fluvial system of Triassic age. It is also a major hydrocarbon reservoir, therefore understanding its internal stratigraphic architecture is of paramount importance to ...
Ken Ratcliffe, Milly Wright, Jösta Vermeulen, Andy Palfrey, Paul Montgomery, Adam Vonk, Michael Barrett   +6 more
core   +1 more source

Chemostratigraphy of the Pliensbachian, Puesto Araya Formation (Neuquén Basin, Argentina)

Geologica Acta, 2005
In a preliminary attempt to establish an isotope stratigraphy, strontium, carbon and oxygen isotope ratios were determined from marine biogenic carbonates of Pliensbachian age, in the context of scheme of local ammonite Zones correlatable to the European
Susana A. Valencio, Mariana Celina Cagnoni, Adriana María Ramos, A. C. (Alberto Carlos) Riccardi, Héctor Osvaldo Panarello   +4 more
doaj   +1 more source