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  Early Jurassic Earth System and Timescale scientific drilling project (JET) – Operational Report & Explanatory Notes

JET Scientific Team, Hesselbo, S., Ullmann, C., Silva, R., Dalby, C., Heeschen, K., Wonik, T. (2023): Early Jurassic Earth System and Timescale scientific drilling project (JET) – Operational Report & Explanatory Notes, (ICDP Operational Report), Potsdam : GFZ German Research Centre for Geosciences, 42 p.
https://doi.org/10.48440/ICDP.5065.001

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5023980 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5023980_1
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https://doi.org/10.5194/sd-32-1-2023 (Supplementary material)
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Referencing Article: Hesselbo, S. P., Al-Suwaidi, A., Baker, S. J., Ballabio, G., Belcher, C. M., Bond, A., Boomer, I., Bos, R., Bjerrum, C. J., Bogus, K., Boyle, R., Browning, J. V., Butcher, A. R., Condon, D. J., Copestake, P., Daines, S., Dalby, C., Damaschke, M., Damborenea, S. E., … Zhao, K. (2023). Initial results of coring at Prees, Cheshire Basin, UK (ICDP JET project): towards an integrated stratigraphy, timescale, and Earth system understanding for the Early Jurassic. In Scientific Drilling (Vol. 32, pp. 1–25). Copernicus GmbH. https://doi.org/10.5194/sd-32-1-2023
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https://doi.org/10.5880/ICDP.5065.001 (Supplementary material)
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Supplementary Data: Wonik, T. (2023). Downhole logging data of the ICDP Scientific Drilling Project “Early Jurassic Earth Sys-tem and Time Scale (JET) [dataset]. GFZ Data Services. https://doi.org/10.5880/ICDP.5065.001

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 Creators:
JET Scientific Team1, Author
Hesselbo, S.P.1, Author
Ullmann, C.V.1, Author
Silva, R.F.L.1, Author
Dalby, C.J.1, Author
Heeschen, Katja1, 2, Author              
Wonik, T.1, Author
Affiliations:
1ICDP Operational Report, ICDP, External Organizations, , , ou_1826888              
24.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146035              

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 Abstract: This report documents the drilling operations of the Early Jurassic Earth System and Timescale scientific drilling project (JET, ICDP Project: 5065). The wells 5065_1_A, 5065_1_B, 5065_1_A were drilled in 2019-2021 with the support of the International Continental Scientific Drilling Program (ICDP) and the UK Natural Environment Research Council (NERC). Alternatively, the site is known as Prees 2 (Holes A – C). Prees 1 was a nearby hydrocarbon exploration well drilled by Trend Petroleum in 1972–1973. The project aims to construct a fully integrated and astronomically calibrated timescale for the Early Jurassic, a time in Earth history during which important physical, chemical, and biological elements of the modern Earth system were initiated. The JET drilling campaign supplements the earlier Llanbedr (Mochras Farm) borehole (1967 – 1969) in NW Wales – usually known as Mo-chras – which recovered a 1.3 km thick succession comprising the Rhaetian (Upper Triassic), Hettangian, Sinemurian, Pliensbachian and Toarcian (Lower Jurassic) stages (Woodland, 1971; Hesselbo et al., 2013). Using the combined framework of Prees and Mochras, internal and ex-ternal forcing factors on the Earth system will be documented and quantified for major palaeo-environmental events, such as the Late Triassic mass extinction and the Early Toarcian Oceanic Anoxic Event, and for the more stable ‘background’ state.

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Language(s): eng - English
 Dates: 20232023
 Publication Status: Finally published
 Pages: 42
 Publishing info: Potsdam : GFZ German Research Centre for Geosciences
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 Rev. Type: -
 Identifiers: DOI: 10.48440/ICDP.5065.001
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Title: ICDP Operational Report
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