Termination II (T-II) is a natural reference for evaluating the potential effect of substantial ice sheets melting on monsoon and temperature changes caused by global warming. However, phase relationship East Asian summer (EASM) during T-II remains enigmatic due to lack paleotemperature proxies. Here, we provide high-resolution mean annual atmospheric (MAAT) estimates in northern China using sp...

Long-chain alkenones (LCAs) produced by phylogenetically classified Groups 1 and 3 Isochrysidales are increasingly used for paleotemperature and/or paleosalinity reconstructions in oligohaline lakes marine environments. However, there considerable difficulties the paleoenvironmental interpretation of LCAs from Group 2 thriving saline lakes. The biggest challenge lies our poor understanding comp...

Abstract A multiproxy Holocene record from a bog in the Hudson Bay Lowlands, northern Ontario, Canada, was used to evaluate how ecohydrology relates carbon accumulation. The study site is located at somewhat higher elevation and on coarser grained deposits than surrounding peatlands. This promotes better drainage thus slower rate of accumulation relative sites with similar initiation age. peat ...

Hydrocarbon exploration under thrust belts is a challenging frontier globally. In this work, 1-D thermal maturity modeling of the Paleozoic–Mesozoic basement in northern margin Western Outer Carpathians was carried out to better explain history source rocks that influenced hydrocarbon generation. The combination Variscan burial and post-Variscan heating due elevated heat flow may have caused si...

The Picture Gorge Subgroup of the Columbia River Basalt preserves numerous, minimally altered, interfl ow paleosols that were formed during the middle Miocene climatic optimum. These paleosols are used to reconstruct a high-resolution paleoclimate record. Between 16.0–15.4 Ma ago, mean annual precipitation (MAP) was 500–900 mm/year and mean annual temperature (MAT) was 8–16°C, which is consiste...

Paleotemperature reconstructions rely on knowledge of the equilibrium separation of oxygen isotopes between aqueous solution and calcium carbonate. Although oxygen isotope separation is expected on theoretical grounds, the temperature-dependence remains uncertain because other factors, such as slow exchange of isotopes between dissolved CO2-species and water, can obscure the temperature signal....