All Outputs (17)

Enhanced ocean connectivity and volcanism instigated global onset of Cretaceous Oceanic Anoxic Event 2 (OAE2) ∼94.5 million years ago (2021)
Journal Article
Li, Y., Liu, X., Selby, D., Liu, Z., Montañez, I. P., & Li, X. (2022). Enhanced ocean connectivity and volcanism instigated global onset of Cretaceous Oceanic Anoxic Event 2 (OAE2) ∼94.5 million years ago. Earth and Planetary Science Letters, 578, Article 117331. https://doi.org/10.1016/j.epsl.2021.117331

Oceanic Anoxic Event 2 (OAE2) exemplifies an episode of global oceanographic and climatic changes in the mid-Cretaceous greenhouse. However, the timing and mechanism of its global initiation remain elusive. Here we report a high-resolution initial os... Read More about Enhanced ocean connectivity and volcanism instigated global onset of Cretaceous Oceanic Anoxic Event 2 (OAE2) ∼94.5 million years ago.

New onshore insights into the role of structural inheritance during Mesozoic opening of the Inner Moray Firth Basin, Scotland (2021)
Journal Article
Tamas, A., Holdsworth, R. E., Underhill, J. R., Tamas, D. M., Dempsey, E. D., Hardman, K., …Selby, D. (2022). New onshore insights into the role of structural inheritance during Mesozoic opening of the Inner Moray Firth Basin, Scotland. Journal of the Geological Society, 179(2), jgs2021-066. https://doi.org/10.1144/jgs2021-066

The Inner Moray Firth Basin (IMFB) forms the western arm of the North Sea trilete rift system that initiated mainly during the Late Jurassic–Early Cretaceous with the widespread development of major NE–SW-trending dip-slip growth faults. The IMFB is... Read More about New onshore insights into the role of structural inheritance during Mesozoic opening of the Inner Moray Firth Basin, Scotland.

Osmium and lithium isotope evidence for weathering feedbacks linked to orbitally paced organic carbon burial and Silurian glaciations (2021)
Journal Article
Sproson, A. D., Pogge von Strandmann, P. A., Selby, D., Jarochowska, E., Frýda, J., Hladil, J., …Lenton, T. M. (2022). Osmium and lithium isotope evidence for weathering feedbacks linked to orbitally paced organic carbon burial and Silurian glaciations. Earth and Planetary Science Letters, 577, Article 117260. https://doi.org/10.1016/j.epsl.2021.117260

The Ordovician (∼487 to 443 Ma) ended with the formation of extensive Southern Hemisphere ice sheets, known as the Hirnantian glaciation, and the second largest mass extinction in Earth History. It was followed by the Silurian (∼443 to 419 Ma), one o... Read More about Osmium and lithium isotope evidence for weathering feedbacks linked to orbitally paced organic carbon burial and Silurian glaciations.

Melting of the Chhota Shigri Glacier, Western Himalaya, Insensitive to Anthropogenic Emission Residues: Insights From Geochemical Evidence (2021)
Journal Article
Nizam, S., Sen, I. S., Shukla, T., & Selby, D. (2021). Melting of the Chhota Shigri Glacier, Western Himalaya, Insensitive to Anthropogenic Emission Residues: Insights From Geochemical Evidence. Geophysical Research Letters, 48(19), Article e2021GL092801. https://doi.org/10.1029/2021gl092801

Himalayan glaciers are invariably covered by supra-glacial debris. Of these glaciers, the Chhota Shigri Glacier (CSG) in the western Himalaya has minimal debris cover (3.4%), yet has a comparable melt rate to other Himalayan glaciers. Utilizing osmiu... Read More about Melting of the Chhota Shigri Glacier, Western Himalaya, Insensitive to Anthropogenic Emission Residues: Insights From Geochemical Evidence.

Tracking magmatism and oceanic change through the early Aptian Anoxic Event (OAE 1a) to the late Aptian: Insights from osmium isotopes from the westernmost Tethys (SE Spain) Cau Core (2021)
Journal Article
Martínez-Rodríguez, R., Selby, D., Castro, J. M., de Gea, G. A., Nieto, L. M., & Ruiz-Ortiz, P. A. (2021). Tracking magmatism and oceanic change through the early Aptian Anoxic Event (OAE 1a) to the late Aptian: Insights from osmium isotopes from the westernmost Tethys (SE Spain) Cau Core. Global and Planetary Change, 207, Article 103652. https://doi.org/10.1016/j.gloplacha.2021.103652

Some of the major Carbon cycle perturbations of the Phanerozoic occurred during the Aptian, in relation to magmatism. The highest temperatures reconstructed for the Cretaceous Period correspond to the Oceanic Anoxic Event of the early Aptian (OAE 1a)... Read More about Tracking magmatism and oceanic change through the early Aptian Anoxic Event (OAE 1a) to the late Aptian: Insights from osmium isotopes from the westernmost Tethys (SE Spain) Cau Core.

NEW GEOCHEMICAL INSIGHTS INTO CENOZOIC SOURCE ROCKS IN AZERBAIJAN: IMPLICATIONS FOR PETROLEUM SYSTEMS IN THE SOUTH CASPIAN REGION (2021)
Journal Article
Aghayeva, V., Sachsenhofer, R., van Baak, C., Bechtel, A., Hoyle, T., Selby, D., …Vincent, S. (2021). NEW GEOCHEMICAL INSIGHTS INTO CENOZOIC SOURCE ROCKS IN AZERBAIJAN: IMPLICATIONS FOR PETROLEUM SYSTEMS IN THE SOUTH CASPIAN REGION. Journal of Petroleum Geology, 44(3), 349-384. https://doi.org/10.1111/jpg.12797

The Maikop Group and the Diatom Formation constitute the two main source rocks in the South Caspian Basin and onshore Azerbaijan where large-scale oil production began more than 150 years ago. However, the stratigraphic distribution of the source roc... Read More about NEW GEOCHEMICAL INSIGHTS INTO CENOZOIC SOURCE ROCKS IN AZERBAIJAN: IMPLICATIONS FOR PETROLEUM SYSTEMS IN THE SOUTH CASPIAN REGION.

Syn-sedimentary to diagenetic Cu ± Co mineralization in Mesoproterozoic pyritic shale driven by magmatic-hydrothermal activity on the edge of the Great Falls tectonic zone – Black Butte, Helena Embayment, Belt-Purcell Basin, USA: Evidence from sulfide Re-Os isotope geochemistry (2021)
Journal Article
Saintilan, N. J., Sheldrake, T. E., Creaser, R. A., Selby, D., Zieg, J., Boyce, A., & Chelle-Michou, C. (2021). Syn-sedimentary to diagenetic Cu ± Co mineralization in Mesoproterozoic pyritic shale driven by magmatic-hydrothermal activity on the edge of the Great Falls tectonic zone – Black Butte, Helena Embayment, Belt-Purcell Basin, USA: Evidence from sulfide Re-Os isotope geochemistry. Lithosphere, 2021(1), Article 7866186. https://doi.org/10.2113/2021/7866186

The ca. 1,500 to 1,325 Ma Mesoproterozoic Belt-Purcell Basin is an exceptionally preserved archive of Mesoproterozoic Earth and its paleo-environmental conditions. The Belt-Purcell Basin is also host to world-class base metal sediment-hosted minerali... Read More about Syn-sedimentary to diagenetic Cu ± Co mineralization in Mesoproterozoic pyritic shale driven by magmatic-hydrothermal activity on the edge of the Great Falls tectonic zone – Black Butte, Helena Embayment, Belt-Purcell Basin, USA: Evidence from sulfide Re-Os isotope geochemistry.

Upper Devonian mercury record from North America and its implications for the Frasnian–Famennian mass extinction (2021)
Journal Article
Liu, Z., Percival, L. M., Vandeputte, D., Selby, D., Claeys, P., Over, D. J., & Gao, Y. (2021). Upper Devonian mercury record from North America and its implications for the Frasnian–Famennian mass extinction. Palaeogeography, Palaeoclimatology, Palaeoecology, 576, Article 110502. https://doi.org/10.1016/j.palaeo.2021.110502

The Frasnian–Famennian biotic crisis (~372 Ma) was one of the “big five” mass extinction events in the Phanerozoic. This event was associated with dramatic climatic and oceanographic perturbations, including oceanic anoxia, global cooling, sea-level... Read More about Upper Devonian mercury record from North America and its implications for the Frasnian–Famennian mass extinction.

Cretaceous intermediate sulfidation ore system in the Dongkeng Volcanic Basin, SE China: constraints from the Dongji and Maluntou gold deposits (2021)
Journal Article
Chen, M., Wei, J., Selby, D., Li, Y., Shi, W., & Zhao, Y. (2021). Cretaceous intermediate sulfidation ore system in the Dongkeng Volcanic Basin, SE China: constraints from the Dongji and Maluntou gold deposits. Ore Geology Reviews, 135, Article 104202. https://doi.org/10.1016/j.oregeorev.2021.104202

The Dongji (>12.5 t Au @ 4.27 g/t) and Maluntou (>5.0 t Au @ 3.70 g/t) gold deposits are the two largest ones in the Dongkeng Volcanic Basin (DVB), SE China, that are hosted by volcanic rocks. Mineralization is represented by three stages (i.e., stag... Read More about Cretaceous intermediate sulfidation ore system in the Dongkeng Volcanic Basin, SE China: constraints from the Dongji and Maluntou gold deposits.

New multicellular marine macroalgae from the early Tonian of northwestern Canada (2021)
Journal Article
Maloney, K. M., Halverson, G. P., Schiffbauer, J. D., Xiao, S., Gibson, T. M., Lechte, M. A., …Laflamme, M. (2021). New multicellular marine macroalgae from the early Tonian of northwestern Canada. Geology, 49(6), 743-747. https://doi.org/10.1130/g48508.1

Molecular phylogenetic data suggest that photosynthetic eukaryotes first evolved in freshwater environments in the early Proterozoic and diversified into marine environments by the Tonian Period, but early algal evolution is poorly reflected in the f... Read More about New multicellular marine macroalgae from the early Tonian of northwestern Canada.

Sulfide recrystallization and gold remobilization during the 2.0 Ga stage of the Minas Orogeny: implications for gold mineralization in the Quadrilátero Ferrífero area, Brazil (2021)
Journal Article
Brando Soares, M., Selby, D., Robb, L., & Corrêa Neto, A. V. (2021). Sulfide recrystallization and gold remobilization during the 2.0 Ga stage of the Minas Orogeny: implications for gold mineralization in the Quadrilátero Ferrífero area, Brazil. Economic geology and the bulletin of the Society of Economic Geologists, 116(6), 1455-1466. https://doi.org/10.5382/econgeo.4830

The historic Quadrilátero Ferrífero mining district in Brazil is a polydeformed Archean terrane recording several tectonic events. This history has hampered the accurate dating of its important gold deposits, given that most of the geochronological c... Read More about Sulfide recrystallization and gold remobilization during the 2.0 Ga stage of the Minas Orogeny: implications for gold mineralization in the Quadrilátero Ferrífero area, Brazil.

Deep-water osmium-isotope record of the Permian–Triassic interval from Niushan, China reveals potential delayed volcanic signal post the mass extinction (2021)
Journal Article
Liu, Z., & Selby, D. (2021). Deep-water osmium-isotope record of the Permian–Triassic interval from Niushan, China reveals potential delayed volcanic signal post the mass extinction. Global and Planetary Change, 200, Article 103473. https://doi.org/10.1016/j.gloplacha.2021.103473

The end Permian mass extinction event is one of the most severe biotic crisis of the Phanerozoic. The trigger of this event has been widely linked to massive volcanic activity associated with the Siberian Traps Large Igneous Province through the appl... Read More about Deep-water osmium-isotope record of the Permian–Triassic interval from Niushan, China reveals potential delayed volcanic signal post the mass extinction.

A revised age, structural model and origin for the North Pennine Orefield in the Alston Block, northern England: intrusion (Whin Sill)-related base metal (Cu–Pb–Zn–F) mineralization (2021)
Journal Article
Dempsey, E., Holdsworth, R., Selby, D., Bird, A., Young, B., & Le Cornu, C. (2021). A revised age, structural model and origin for the North Pennine Orefield in the Alston Block, northern England: intrusion (Whin Sill)-related base metal (Cu–Pb–Zn–F) mineralization. Journal of the Geological Society, 178(4), jgs2020-226. https://doi.org/10.1144/jgs2020-226

Mineralization and associated fluid migration events in the c. 1500 km2 North Pennine Orefield (NPO) are known to be associated with tectonic activity, but the age of these tectonic events and origins of the base metal sulfide mineralization remain u... Read More about A revised age, structural model and origin for the North Pennine Orefield in the Alston Block, northern England: intrusion (Whin Sill)-related base metal (Cu–Pb–Zn–F) mineralization.

Geology, mineralogy, ore paragenesis, and molybdenite Re-Os geochronology of Sn-W (-Mo) mineralization in Padatgyaung and Dawei, Myanmar: Implications for timing of mineralization and tectonic setting (2021)
Journal Article
Myint, A. Z., Li, H., Mitchell, A., Selby, D., & Wagner, T. (2021). Geology, mineralogy, ore paragenesis, and molybdenite Re-Os geochronology of Sn-W (-Mo) mineralization in Padatgyaung and Dawei, Myanmar: Implications for timing of mineralization and tectonic setting. Journal of Asian Earth Sciences, 212, Article 104725. https://doi.org/10.1016/j.jseaes.2021.104725

The Sn-W (-Mo) deposits of Myanmar are mostly located in the Western Granite Province that is well known for its world-class Sn-W (-Mo) deposits. Previous studies have constrained the age of the granitic intrusions of the province and the timing of m... Read More about Geology, mineralogy, ore paragenesis, and molybdenite Re-Os geochronology of Sn-W (-Mo) mineralization in Padatgyaung and Dawei, Myanmar: Implications for timing of mineralization and tectonic setting.

The Giant Chalukou Porphyry Mo Deposit, Northeast China: The Product of a Short-Lived, High Flux Mineralizing Event (2021)
Journal Article
Zhao, Q., Zhai, D., Mathur, R., Liu, J., Selby, D., & Williams-Jones, A. E. (2021). The Giant Chalukou Porphyry Mo Deposit, Northeast China: The Product of a Short-Lived, High Flux Mineralizing Event. Economic geology and the bulletin of the Society of Economic Geologists, 116(5), 1209-1225. https://doi.org/10.5382/econgeo.4818

Whether giant porphyry ore deposits are the products of single, short-lived magmatic-hydrothermal events or multiple events over a prolonged interval is a topic of considerable debate. Previous studies, however, have all been devoted to porphyry Cu a... Read More about The Giant Chalukou Porphyry Mo Deposit, Northeast China: The Product of a Short-Lived, High Flux Mineralizing Event.

Depositional influences on Re-Os systematics of Late Cretaceous–Eocene fluvio-deltaic coals and coaly mudstones, Taranaki Basin, New Zealand (2021)
Journal Article
Rotich, E. K., Handler, M. R., Sykes, R., Selby, D., & Naeher, S. (2021). Depositional influences on Re-Os systematics of Late Cretaceous–Eocene fluvio-deltaic coals and coaly mudstones, Taranaki Basin, New Zealand. International Journal of Coal Geology, 236, Article 103670. https://doi.org/10.1016/j.coal.2020.103670

The factors controlling Re-Os systematics and potential for geochronology in organic-rich sedimentary rocks deposited in fully terrestrial to paralic environments are not well understood. Here we present Re-Os, bulk pyrolysis and sulfur data for coal... Read More about Depositional influences on Re-Os systematics of Late Cretaceous–Eocene fluvio-deltaic coals and coaly mudstones, Taranaki Basin, New Zealand.

Osmium isotopic constraints on sulphide formation in the epithermal environment of magmatic-hydrothermal mineral deposits (2021)
Journal Article
Saintilan, N. J., Sproson, A. D., Selby, D., Rottier, B., Casanova, V., Creaser, R. A., …Zambito, J. J. (2021). Osmium isotopic constraints on sulphide formation in the epithermal environment of magmatic-hydrothermal mineral deposits. Chemical Geology, 564, Article 120053. https://doi.org/10.1016/j.chemgeo.2020.120053

In the magmatic-hydrothermal environment, fluids with similar metal concentrations and sources may yield contrasting mineral assemblages in successive stages of sulphide mineralization. These differences are linked to the physico-chemical conditions... Read More about Osmium isotopic constraints on sulphide formation in the epithermal environment of magmatic-hydrothermal mineral deposits.