All Outputs (155)

The effect of interbedding on shale reservoir properties (2015)
Journal Article
Raji, M., Gröcke, D., Greenwell, H., Gluyas, J., & Cornford, C. (2015). The effect of interbedding on shale reservoir properties. Marine and Petroleum Geology, 67, 154-169. https://doi.org/10.1016/j.marpetgeo.2015.04.015

North Sea oil is overwhelmingly generated in shales of the Upper Jurassic – basal Cretaceous Kimmeridge Clay Formation. Once generated, the oil is expelled and ultimately migrates to accumulate in sandstone or carbonate reservoirs. The source rock sh... Read More about The effect of interbedding on shale reservoir properties.

A revised northern European Turonian (Upper Cretaceous) dinoflagellate cyst biostratigraphy: Integrating palynology and carbon isotope events (2014)
Journal Article
Olde, K., Jarvis, I., Pearce, M., Ulicný, D., Tocher, B., Trabucho-Alexandre, J., & Gröcke, D. (2015). A revised northern European Turonian (Upper Cretaceous) dinoflagellate cyst biostratigraphy: Integrating palynology and carbon isotope events. Review of Palaeobotany and Palynology, 213, 1-16. https://doi.org/10.1016/j.revpalbo.2014.10.006

Organic walled dinoflagellate cyst (dinocyst) assemblage data are presented for a new Turonian regional reference core (Bch-1) drilled at Běchary in the Bohemian Cretaceous Basin, east-central Czech Republic. The detailed stratigraphic framework for... Read More about A revised northern European Turonian (Upper Cretaceous) dinoflagellate cyst biostratigraphy: Integrating palynology and carbon isotope events.

The Pliensbachian-Toarcian (Early Jurassic) extinction: A North American perspective. (2014)
Book Chapter
Caruthers, A., Smith, P., & Gröcke, D. (2014). The Pliensbachian-Toarcian (Early Jurassic) extinction: A North American perspective. In Volcanism, Impacts, and Mass Extinctions: Causes and Effects (225-243). Geological Society of America. https://doi.org/10.1130/2014.2505%2811%29

Currently, it is believed that volcanogenic outgassing of CO2 during Karoo-Ferrar igneous province eruptions caused prolonged global warming and a multiphased extinction event during the Pliensbachian–Toarcian interval of the Early Jurassic. Warmer w... Read More about The Pliensbachian-Toarcian (Early Jurassic) extinction: A North American perspective..

Paleoenvironmental conditions recorded by 87Sr/86Sr, δ13C and δ18O in late Pliensbachian–Toarcian (Jurassic) belemnites from Bulgaria (2014)
Journal Article
Metodiev, L., Savov, I., Gröcke, D., Wignall, P., Newton, R., Andreeva, P., & Koleva-Rekalova, E. (2014). Paleoenvironmental conditions recorded by 87Sr/86Sr, δ13C and δ18O in late Pliensbachian–Toarcian (Jurassic) belemnites from Bulgaria. Palaeogeography, Palaeoclimatology, Palaeoecology, 409, 98-113. https://doi.org/10.1016/j.palaeo.2014.04.025

The late Pliensbachian–Toarcian (Jurassic) sedimentological, paleontological and geochemical (belemnite 87Sr/86Sr, δ13C and δ18O) record is examined in two Eastern Tethyan (Bulgarian) locations. This interval contains the well-known early Toarcian oc... Read More about Paleoenvironmental conditions recorded by 87Sr/86Sr, δ13C and δ18O in late Pliensbachian–Toarcian (Jurassic) belemnites from Bulgaria.

New high resolution geochemistry of Lower Jurassic marine sections in western North America: A global positive carbon isotope excursion in the Sinemurian? (2014)
Journal Article
Porter, S., Smith, P., Carruthers, A., Hou, P., Gröcke, D., & Selby, D. (2014). New high resolution geochemistry of Lower Jurassic marine sections in western North America: A global positive carbon isotope excursion in the Sinemurian?. Earth and Planetary Science Letters, 397, 19-31. https://doi.org/10.1016/j.epsl.2014.04.023

Recognising variations in the carbon isotope compositions of marine organic-rich sedimentary rocks can provide insight into changes in ocean chemistry throughout geological time. Further, identification of global excursions in the carbon isotope reco... Read More about New high resolution geochemistry of Lower Jurassic marine sections in western North America: A global positive carbon isotope excursion in the Sinemurian?.

A high-resolution carbon-isotope record of the Turonian stage correlated to a siliciclastic basin fill: Implications for mid-Cretaceous sea-level change (2014)
Journal Article
Ulicný, D., Jarvis, I., Gröcke, D., Cech, S., Laurin, J., Olde, K., …Pedentchouk, N. (2014). A high-resolution carbon-isotope record of the Turonian stage correlated to a siliciclastic basin fill: Implications for mid-Cretaceous sea-level change. Palaeogeography, Palaeoclimatology, Palaeoecology, 405, 42-58. https://doi.org/10.1016/j.palaeo.2014.03.033

Turonian strata of the Bohemian Cretaceous Basin, Central Europe, preserve a basin-scale record of shoreline transgressions and regressions, previously interpreted to have been strongly influenced by short-term eustatic cycles. Here, nearshore silici... Read More about A high-resolution carbon-isotope record of the Turonian stage correlated to a siliciclastic basin fill: Implications for mid-Cretaceous sea-level change.

Organic geochemistry of the early Toarcian oceanic anoxic event in Hawsker Bottoms, Yorkshire, England (2014)
Journal Article
French, K., Sepúlveda, J., Trabucho-Alexandre, J., Gröcke, D., & Summons, R. (2014). Organic geochemistry of the early Toarcian oceanic anoxic event in Hawsker Bottoms, Yorkshire, England. Earth and Planetary Science Letters, 390, 116-127. https://doi.org/10.1016/j.epsl.2013.12.033

A comprehensive organic geochemical investigation of the Hawsker Bottoms outcrop section in Yorkshire, England has provided new insights about environmental conditions leading into and during the Toarcian oceanic anoxic event (T-OAE; ∼183 Ma). Rock-E... Read More about Organic geochemistry of the early Toarcian oceanic anoxic event in Hawsker Bottoms, Yorkshire, England.

Marine 187Os/188Os isotope stratigraphy reveals the interaction of volcanism and ocean circulation during Oceanic Anoxic Event 2 (2014)
Journal Article
Du Vivier, A., Selby, D., Sageman, B., Jarvis, I., Gröcke, D., & Voigt, S. (2014). Marine 187Os/188Os isotope stratigraphy reveals the interaction of volcanism and ocean circulation during Oceanic Anoxic Event 2. Earth and Planetary Science Letters, 389(1), 23-33. https://doi.org/10.1016/j.epsl.2013.12.024

High-resolution osmium (Os) isotope stratigraphy across the Cenomanian–Turonian Boundary Interval from 6 sections for four transcontinental settings has produced a record of seawater chemistry that demonstrates regional variability as a function of t... Read More about Marine 187Os/188Os isotope stratigraphy reveals the interaction of volcanism and ocean circulation during Oceanic Anoxic Event 2.

Carbon, oxygen and strontium isotopic composition of low-latitude Permian carbonates (Venezuelan Andes): climate proxies of tropical Pangea (2013)
Book Chapter
Laya, J., Tucker, M., Gröcke, D., & Perez-Huerta, A. (2013). Carbon, oxygen and strontium isotopic composition of low-latitude Permian carbonates (Venezuelan Andes): climate proxies of tropical Pangea. In Palaeozoic Climate Cycles: Their Evolutionary and Sedimentological Impact (367-385). The Geological Society. https://doi.org/10.1144/sp376.10

The Late Palaeozoic period was an important time in Earth history, primarily as a result of the formation of Pangea and the Gondwana glaciations that had direct influences in high latitudes and indirect, but no less important, effects in low latitude... Read More about Carbon, oxygen and strontium isotopic composition of low-latitude Permian carbonates (Venezuelan Andes): climate proxies of tropical Pangea.

Mobility histories of 7th-9th century AD people buried at Early Medieval Bamburgh, Northumberland, England (2013)
Journal Article
Groves, S., Roberts, C., Lucy, S., Pearson, G., Gröcke, D., Nowell, G., …Young, G. (2013). Mobility histories of 7th-9th century AD people buried at Early Medieval Bamburgh, Northumberland, England. American journal of physical anthropology, 151(3), 462-476. https://doi.org/10.1002/ajpa.22290

Early Medieval England is described historically as a time when people migrated from the Continent to English shores. This study tests the hypothesis that those buried in the Bowl Hole cemetery, Bamburgh, Northumberland were nonlocally born, because... Read More about Mobility histories of 7th-9th century AD people buried at Early Medieval Bamburgh, Northumberland, England.

New views on old carbon in the Amazon river: Insight from the source of organic carbon eroded from the Peruvian Andes (2013)
Journal Article
Clark, K., Hilton, R., West, A., Malhi, Y., Gröcke, D., Bryant, C., …New, M. (2013). New views on old carbon in the Amazon river: Insight from the source of organic carbon eroded from the Peruvian Andes. Geochemistry, Geophysics, Geosystems, 14(5), 1644-1659. https://doi.org/10.1002/ggge.20122

[1] Mountain rivers play a key role in the delivery of particulate organic carbon (POC) to large river systems and the ocean. Due to the extent of its drainage area and runoff, the Amazon River is one of Earth's most important biogeochemical systems.... Read More about New views on old carbon in the Amazon river: Insight from the source of organic carbon eroded from the Peruvian Andes.

The Pliensbachian–Toarcian (Early Jurassic) extinction, a global multi-phased event (2013)
Journal Article
Caruthers, A., Smith, P., & Gröcke, D. (2013). The Pliensbachian–Toarcian (Early Jurassic) extinction, a global multi-phased event. Palaeogeography, Palaeoclimatology, Palaeoecology, 386, 104-118. https://doi.org/10.1016/j.palaeo.2013.05.010

During the Pliensbachian–Toarcian interval of the Early Jurassic, there is a well-known second order marine extinction that is observable at the species and genus levels. Ammonite diversity data from successions throughout Europe and parts of the Arc... Read More about The Pliensbachian–Toarcian (Early Jurassic) extinction, a global multi-phased event.

Opening of a trans-Pangaean marine corridor during the Early Jurassic: Insights from osmium isotopes across the Sinemurian–Pliensbachian GSSP, Robin Hood's Bay, UK (2013)
Journal Article
Porter, S., Selby, D., Suzuki, K., & Gröcke, D. (2013). Opening of a trans-Pangaean marine corridor during the Early Jurassic: Insights from osmium isotopes across the Sinemurian–Pliensbachian GSSP, Robin Hood's Bay, UK. Palaeogeography, Palaeoclimatology, Palaeoecology, 375, 50-58. https://doi.org/10.1016/j.palaeo.2013.02.012

The Hispanic Corridor represents a significant phase of continental reorganisation of the Early Jurassic that eventually provided connectivity between the western Tethyan and eastern Pacific oceans along the Central Atlantic rift zone. Although the i... Read More about Opening of a trans-Pangaean marine corridor during the Early Jurassic: Insights from osmium isotopes across the Sinemurian–Pliensbachian GSSP, Robin Hood's Bay, UK.

Regional ecological variability and impact of the maritime fur trade on nearshore ecosystems in southern Haida Gwaii (British Columbia, Canada): evidence from stable isotope analysis of rockfish (Sebastes spp.) bone collagen (2013)
Journal Article
Szpak, P., Orchard, T., Salomon, A., & Gröcke, D. (2013). Regional ecological variability and impact of the maritime fur trade on nearshore ecosystems in southern Haida Gwaii (British Columbia, Canada): evidence from stable isotope analysis of rockfish (Sebastes spp.) bone collagen. Archaeological and Anthropological Sciences, 5(2), 159-182. https://doi.org/10.1007/s12520-013-0122-y

The maritime fur trade (1785–1840s) led to the local extinction of sea otters (Enhydra lutris) in many parts of the northeast Pacific. On the basis of studies of extant sea otter populations, it has been established that they have a disproportionate... Read More about Regional ecological variability and impact of the maritime fur trade on nearshore ecosystems in southern Haida Gwaii (British Columbia, Canada): evidence from stable isotope analysis of rockfish (Sebastes spp.) bone collagen.

Isotopic tracing of the impact of mobility on infectious disease: The origin of people with treponematosis buried in hull, England, in the late medieval period. (2012)
Journal Article
Roberts, C., Millard, A., Nowell, G., Gröcke, D., Macpherson, C., Pearson, G., & Evans, D. (2013). Isotopic tracing of the impact of mobility on infectious disease: The origin of people with treponematosis buried in hull, England, in the late medieval period. American journal of physical anthropology, 150(2), 273-285. https://doi.org/10.1002/ajpa.22203

Treponematosis has been one of the most studied and debated infectious diseases in paleopathology, particularly from the standpoint of its origin, evolution, and transmission. This study links evidence for treponematosis in skeletons from the 14th–16... Read More about Isotopic tracing of the impact of mobility on infectious disease: The origin of people with treponematosis buried in hull, England, in the late medieval period..

Fault-related fluid flow history in shallow marine sediments from carbonate concretions, Crotone basin, south Italy (2012)
Journal Article
Balsamo, F., Storti, F., & Gröcke, D. (2012). Fault-related fluid flow history in shallow marine sediments from carbonate concretions, Crotone basin, south Italy. Journal of the Geological Society, 169(5), 613-626. https://doi.org/10.1144/0016-76492011-109

We present the results of a multidisciplinary study on the relationships between the structural architecture of an extensional fault system in poorly lithified shallow marine sands and the associated pattern of diagenetic carbonate concretions. Based... Read More about Fault-related fluid flow history in shallow marine sediments from carbonate concretions, Crotone basin, south Italy.

North American transect of stable hydrogen and oxygen isotopes in water beetles from a museum collection. (2012)
Journal Article
van Hardenbroek, M., Gröcke, D., Sauer, P., & Elias, S. (2012). North American transect of stable hydrogen and oxygen isotopes in water beetles from a museum collection. Journal of Paleolimnology, 48(2), 461-470. https://doi.org/10.1007/s10933-012-9623-4

Museum collections contain a wealth of insect remains originating from a wide geographic range, which can be used to investigate their utility as a proxy for environmental isotope ratios. Chitinous remains of insects such as beetles (Coleoptera) are... Read More about North American transect of stable hydrogen and oxygen isotopes in water beetles from a museum collection..

Paleotemperature and paleosalinity inferences and chemostratigraphy across the Aptian/Albian boundary in the subtropical North Atlantic (2011)
Journal Article
Huber, B., MacLeod, K., Gröcke, D., & Kucera, M. (2011). Paleotemperature and paleosalinity inferences and chemostratigraphy across the Aptian/Albian boundary in the subtropical North Atlantic. Paleoceanography, 26(4), Article PA4221. https://doi.org/10.1029/2011pa002178

[1] Geochemical analyses of extraordinarily well preserved late Aptian–early Albian foraminifera from Blake Nose (Ocean Drilling Program Site 1049) reveal rapid shifts of δ18O, δ13C, and 87Sr/88Sr in the subtropical North Atlantic that may be linked... Read More about Paleotemperature and paleosalinity inferences and chemostratigraphy across the Aptian/Albian boundary in the subtropical North Atlantic.

Historical ecology of late Holocene sea otters (Enhydra lutris) from northern British Columbia: isotopic and zooarchaeological perspectives (2011)
Journal Article
Szpak, P., Orchard, T., McKechnie, I., & Gröcke, D. (2012). Historical ecology of late Holocene sea otters (Enhydra lutris) from northern British Columbia: isotopic and zooarchaeological perspectives. Journal of Archaeological Science, 39(5), 1553-1571. https://doi.org/10.1016/j.jas.2011.12.006

We examined the isotopic composition (δ13C and δ15N) of sea otter (Enhydra lutris) bone collagen from ten late Holocene (ca. 5200 years BP–AD 1900) archaeological sites in northern British Columbia (BC), Canada. Because sea otters are now extinct fro... Read More about Historical ecology of late Holocene sea otters (Enhydra lutris) from northern British Columbia: isotopic and zooarchaeological perspectives.

An open ocean record of the Toarcian oceanic anoxic event (2011)
Journal Article
Gröcke, D., Hori, R., Trabucho-Alexandre, J., Kemp, D., & Schwark, L. (2011). An open ocean record of the Toarcian oceanic anoxic event. Solid Earth, 2(2), 245-257. https://doi.org/10.5194/se-2-245-2011

Oceanic anoxic events were time intervals in the Mesozoic characterized by widespread distribution of marine organic matter-rich sediments (black shales) and significant perturbations in the global carbon cycle. These perturbations are globally recor... Read More about An open ocean record of the Toarcian oceanic anoxic event.