Major and trace element composition, and stable isotope data for whole-rock samples from alkaline rocks of the Chilwa Province. Samples collected between 2011-2021 in the Chilwa Alkaline Province, Malawi

Data from Tanzania Drilling Project Core Site 14 B. Data spans the Paleocene Eocene Thermal Maximum ~56 million years ago. Data includes: bulk sediment geochemistry, BIT index and GDGT data, n-alkane d13C data, single specimen planktonic foraminifera stable isotope data and planktonic foraminifera count data. Geographic location 9°16'59.89"S, 39°30'45.04"E

Twenty-six 10 cm3 samples from DSDP (Deep Sea Drilling Project) Site 94, Core 15, sections 3 and 4 were examined at 10 cm-intervals (417.84-415.01 meters below seafloor [mbsf]). The sedimentary material was soaked in distilled water and washed under running water through a 63 µm sieve and oven dried at <40 degrees C. Samples were then re-washed and dried using the same method. Foraminifera are abundant and recystallised. Calcite precipitation is observed on microspherules in some samples. For each sample, a total of three foraminiferal species that correspond to different ecological habitats were selected for isotope analysis. Specimens of Pseudohastigerina micra and P. naguewichiensis were selected from the 125-250 µm size fraction and Turborotalia cocoaensis, and Cibicidoides eocaenus were selected from the >250 µm size fraction. Specimens that had infilling or showed heavy calcification were avoided. All foraminifera were ultrasonicated for 2 seconds prior to isotopic analyses. To track the number of impact microspherules across the sampled interval, we performed our own microspherules count from the >125 micron size fraction. Microtektites have not been distinguished from microkrystites in this study and thus all recovered spherules should be considered under the broader category of microspherules (both microtektites and crystalline-bearing microkrystites). We recovered a total of 4999 microspherules from the 26 samples. Microspherules are usually <1 mm in size, and occur primarily spherical, although ellipsoid, teardrop and dumbbell forms and fragments have also been found. In most samples the microspherules count is low <50 microspherules. We found a high abundance (>50 microspherules/10 cm3) between samples 15R/3/135-137 cm and 15R/3/89-91 cm (416.36 to 415.90 mbsf). Our peak concentration of microspherules at 15R/3/109-111 cm (416.10 mbsf), where 3395 microspherules were recovered, coincides with the younger of the two late Eocene impacts i.e., the North America microtektite horizon associated with the Chesapeake Bay impact.

Benthic stable isotope (carbon and oxygen) data from IODP Site U1445. Generated by Yasmin Bokhari-Friberg, supervisied by Kate Littler and Pallavi Anand.

Groundwater and gas samples collected from sites in the Vale of Pickering and analysed for major gas concentrations, methane stable isotopes, and noble gas compositions.

Data derived from NERC Grant NE/N001621/1. Geographical Area - DSDP/ODP/IODP Sites 516, 1138, 925, 242, 1338, 871, 872

Carbon and oxygen isotopic composition of planktic foraminifera spanning the early and middle Eocene succession recovered from borehole 16/28-Sb01. For description of this sedimentary sequence see Haughton et al. 2005. Petroleum Geology: North-West Europe and Global Perspectives, Proceedings of the 6th Petroleum Geology Conference, 1077–1094.

Carbon and oxygen isotopic composition of benthic foraminifera spanning the early and middle Eocene succession recovered from borehole 16/28-Sb01. For description of this sedimentary sequence see Haughton et al. 2005. Petroleum Geology: North-West Europe and Global Perspectives, Proceedings of the 6th Petroleum Geology Conference, 1077–1094.

This dataset contains 6 tables covering all analytical data for samples collected from the Anyue gas field, central Sichuan Basin, China. Table 1 includes major gas species and stable carbon and hydrogen isotopes. Table 2 includes results for methane clumped isotopes and calculated methane formation temperatures of gas samples. Table 3 includes noble gas concentrations. Table 4 includes noble gas isotopic ratios. Table 5 includes parameters used in methane emission model and calculating total volume of methane emission. Table 6 includes gas composition and stable carbon and hydrogen isotope characteristics of major gases produced in the pyrolysis experiments (thermally equilibrated methane between 400~500 in theory) and working reference gas, and their methane clumped isotope values.

Carbon and oxygen isotopic composition of bulk sediment carbonate spanning the early and middle Eocene succession recovered from borehole 16/28-Sb01. For description of this sedimentary sequence see Haughton et al. 2005. Petroleum Geology: North-West Europe and Global Perspectives, Proceedings of the 6th Petroleum Geology Conference, 1077–1094.