James G. Ogg
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View article: Astronomically calibrated integrated stratigraphy of the Induan Stage in the aftermath of the Permian–Triassic mass extinction
Astronomically calibrated integrated stratigraphy of the Induan Stage in the aftermath of the Permian–Triassic mass extinction Open
Accurately estimating the duration of the Induan Stage (Early Triassic) is crucial for understanding biotic recovery and environmental upheavals following the Permian–Triassic Mass Extinction. However, considerable uncertainties rema…
View article: Continental drift triggered the Early Permian aridification of North China
Continental drift triggered the Early Permian aridification of North China Open
The boundary between wet and arid climate zones in the Tethys Ocean remains challenging to trace, complicating our understanding of global aridification pattern during the Late Carboniferous to Early Permian transition. The North China Blo…
View article: First discovery of actinopterygian cutting-edged teeth from the middle Norian (Late Triassic) at the Tulong section, southern Tibet, China
First discovery of actinopterygian cutting-edged teeth from the middle Norian (Late Triassic) at the Tulong section, southern Tibet, China Open
Actinopterygians (ray-finned fishes) successfully passed through the Permian-Triassic Mass Extinction (PTME) and flourished in the Triassic with diverse feeding specializations and occupation of various trophic levels. Birgeria , one of th…
View article: Tectonically Controlled Establishment of Modern‐Like Precipitation Patterns in East and Central Asia During the Early Late Miocene
Tectonically Controlled Establishment of Modern‐Like Precipitation Patterns in East and Central Asia During the Early Late Miocene Open
Deciphering how modern precipitation patterns became established in monsoon‐dominated East Asia and the arid interior Asia is crucial for predicting future precipitation trends under accelerated global warming and increased climate extreme…
View article: Supplemental Material: Retraversing the highs and lows of Cenozoic sea levels
Supplemental Material: Retraversing the highs and lows of Cenozoic sea levels Open
Supplemental Text S1. Further discussion of topics in main paper, rationale for refining ages of depositional surfaces, and additional documentation sources. Figure S1. Composite Cenozoic depositional sequences and eustatic sea-level varia…
View article: Supplemental Material: Retraversing the highs and lows of Cenozoic sea levels
Supplemental Material: Retraversing the highs and lows of Cenozoic sea levels Open
Supplemental Text S1. Further discussion of topics in main paper, rationale for refining ages of depositional surfaces, and additional documentation sources. Figure S1. Composite Cenozoic depositional sequences and eustatic sea-level varia…
View article: Geologic formation database for Africa with projections onto plate reconstructions
Geologic formation database for Africa with projections onto plate reconstructions Open
It is a challenge to obtain information about the geologic formations and their succession in Africa due to lack of on-line lexicons for most regions.  Therefore, we established AfricaLex as a free public online database that includes…
View article: South East Asia and Middle East Geologic Formation Databases with Visualizations on Plate Reconstructions
South East Asia and Middle East Geologic Formation Databases with Visualizations on Plate Reconstructions Open
In a successful collaboration with numerous regional experts on the stratigraphy of Southeast Asia and the Middle East, our international team developed cloud-based stratigraphic lexicons with graphical user-interfaces. These databases con…
View article: Online databases of the geologic formations of Asia and Africa with display onto plate reconstructions
Online databases of the geologic formations of Asia and Africa with display onto plate reconstructions Open
Building paleogeographic maps that are projected onto different tectonic plate reconstruction models requires team efforts to compile extensive interlinked databases of regional sedimentary and volcanic facies, data sharing standards, and …
View article: Assessing environmental change associated with early Eocene hyperthermals in the Atlantic Coastal Plain, USA
Assessing environmental change associated with early Eocene hyperthermals in the Atlantic Coastal Plain, USA Open
Eocene transient global warming events (hyperthermals) can provide insight into a future warmer world. While much research has focused on the Paleocene–Eocene Thermal Maximum (PETM), hyperthermals of a smaller magnitude can be used to char…
View article: Online data service for geologic formations (Lexicons) of China, India, Vietnam and Thailand with one‐click visualizations onto East Asia plate reconstructions
Online data service for geologic formations (Lexicons) of China, India, Vietnam and Thailand with one‐click visualizations onto East Asia plate reconstructions Open
Paleogeography is the merger of sediment and volcanic facies, depositional settings, tectonic plate movements, topography, climate patterns and ecosystems through time. The construction of paleogeographic maps on tectonic plate reconstruct…
View article: Comment on egusphere-2023-58
Comment on egusphere-2023-58 Open
Abstract. Eocene transient global warming events (hyperthermals) can provide insight into a future, warmer world. While much research has focused on the Paleocene-Eocene Thermal Maximum (PETM), hyperthermals of smaller magnitude can be use…
View article: DDE-TS: A semantic service for geologic time
DDE-TS: A semantic service for geologic time Open
Age is an important property in geologic data. It can tell us when a geologic event happened, how long did the event last. And it is important to know the sequence of events to consider the causation between these events. On the other hand…
View article: Construction of a Fluvial Facies Knowledge Graph and Its Application in Sedimentary Facies Identification
Construction of a Fluvial Facies Knowledge Graph and Its Application in Sedimentary Facies Identification Open
Lithofacies paleogeography is a data-intensive discipline that involves the interpretation and compilation of sedimentary facies. Traditional sedimentary facies analysis is a labor-intensive task with the added complexity of using unstruct…
View article: Plio-Pleistocene deep-sea ventilation in the eastern Pacific and potential linkages with Northern Hemisphere glaciation
Plio-Pleistocene deep-sea ventilation in the eastern Pacific and potential linkages with Northern Hemisphere glaciation Open
Antarctic bottom water (AABW) production is a key factor governing global ocean circulation, and the present disintegration of the Antarctic Ice Sheet slows it. However, its long-term variability has not been well documented. On the basis …
View article: Databases for China-Indochina Paleogeography
Databases for China-Indochina Paleogeography Open
            Building paleogeographic maps requires team efforts to compile databases of regional sedimentary and volcanic facies, to validate and update information, and to develop vis…
View article: Indian Plate stratigraphic units: On-line open-access database (Lexicon), including options to display sediment and volcanic facies onto plate reconstructions
Indian Plate stratigraphic units: On-line open-access database (Lexicon), including options to display sediment and volcanic facies onto plate reconstructions Open
Our international team has worked with regional experts to compile details on nearly every geologic formation of the Indian Plate from Proterozoic through Quaternary. This suite of nearly 1000 sedimentary and volcanic formations includes I…
View article: Integration of deep-time databases: towards building a deep-time digital Earth
Integration of deep-time databases: towards building a deep-time digital Earth Open
The integration of deep-time databases is a key aspect in the creation of a comprehensive digital model of Earth's history, known as the "deep-time digital Earth." This model would enable scientists to better comprehend the intricate proce…
View article: Online Databases of Geologic Formations of Asia and Africa, with Display onto Plate Reconstructions for Any Time Horizon
Online Databases of Geologic Formations of Asia and Africa, with Display onto Plate Reconstructions for Any Time Horizon Open
Two goals of the Paleogeography Working Group of the Deep-Time Digital Earth (DDE) program of the International Union of Geological Sciences (IUGS) are: (1) to interconnect national databases for all geologic formations, and to compile new…
View article: Assessing Environmental Change Associated with Early Eocene Hyperthermals in the Atlantic Coastal Plain, USA
Assessing Environmental Change Associated with Early Eocene Hyperthermals in the Atlantic Coastal Plain, USA Open
Eocene transient global warming events (hyperthermals) can provide insight into a future, warmer world. While much research has focused on the Paleocene-Eocene Thermal Maximum (PETM), hyperthermals of smaller magnitude can be used to chara…
View article: Peer Review #3 of "Upper Norian conodonts from the Baoshan block, western Yunnan, southwestern China, and implications for conodont turnover (v0.2)"
Peer Review #3 of "Upper Norian conodonts from the Baoshan block, western Yunnan, southwestern China, and implications for conodont turnover (v0.2)" Open
The Sevatian of the late Norian is one of the key intervals in biotic turnover and in changes of paleoclimate and paleoenvironments.Conodont faunas recovered from two sections of upper Norian strata of the Dashuitang and Nanshuba formation…
View article: Peer Review #3 of "Upper Norian conodonts from the Baoshan block, western Yunnan, southwestern China, and implications for conodont turnover (v0.1)"
Peer Review #3 of "Upper Norian conodonts from the Baoshan block, western Yunnan, southwestern China, and implications for conodont turnover (v0.1)" Open
The Sevatian of the late Norian is one of the key intervals in biotic turnover and in changes of paleoclimate and paleoenvironments.Conodont faunas recovered from two sections of upper Norian strata of the Dashuitang and Nanshuba formation…
View article: Upper Norian conodonts from the Baoshan block, western Yunnan, southwestern China, and implications for conodont turnover
Upper Norian conodonts from the Baoshan block, western Yunnan, southwestern China, and implications for conodont turnover Open
The Sevatian of the late Norian is one of the key intervals in biotic turnover and in changes of paleoclimate and paleoenvironments. Conodont faunas recovered from two sections of upper Norian strata of the Dashuitang and Nanshuba formatio…
View article: The Global Stratotype Section and Point (GSSP) for the base of the Kimmeridgian Stage (Jurassic System), at Flodigarry, Staffin Bay, Isle of Skye, Scotland, UK
The Global Stratotype Section and Point (GSSP) for the base of the Kimmeridgian Stage (Jurassic System), at Flodigarry, Staffin Bay, Isle of Skye, Scotland, UK Open
Following voting by the Kimmeridgian Working Group, the International Subcommission on Jurassic Stratigraphy and the International Commission on Stratigraphy, the Global Stratotype Section and Point (GSSP) for the base of the Kimmeridgian …
View article: Late Guadalupian–early Lopingian marine geochemical records from the Upper Yangtze, South China: Implications for climate-biocrisis events
Late Guadalupian–early Lopingian marine geochemical records from the Upper Yangtze, South China: Implications for climate-biocrisis events Open
Major paleoenvironmental changes occurred during the Guadalupian-Lopingian boundary (GLB) transition, but the causative linkages among the Emeishan Large Igneous Province (LIP), end-Guadalupian crisis and climatic fluctuations are still in…