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Late Holocene drought responsible for the collapse of Old World civilizations is recorded in an Italian cave flowstone
A severe drought in parts of low-latitude northeastern Africa and southwestern Asia ∼4200 yr ago caused major disruption to ancient civilizations. Stable isotope, trace element, and organicExpand
A composite C-isotope profile for the Neoproterozoic Dalradian Supergroup of Scotland and Ireland
Abstract: The Neoproterozoic Dalradian Supergroup is a dominantly siliciclastic metasedimentary succession in the Caledonian orogenic belt of Scotland and Ireland. Despite polyphase deformation andExpand
Extreme 13Ccarb enrichment in ca. 2.0 Ga magnesite–stromatolite–dolomite–`red beds' association in a global context: a case for the world-wide signal enhanced by a local environment
Abstract The Palaeoproterozoic positive excursion of δ 13 C carb is now considered as three positive shifts of δ 13 C carb separated by returns to 0‰, which all occurred between 2.40 and 2.06 Ma.Expand
Enhanced rainfall in the Western Mediterranean during deposition of sapropel S1: stalagmite evidence from Corchia cave (Central Italy)
A stable isotope record from a stalagmite collected from Antro del Corchia cave (Apuan Alps, Central Italy), supported by 17 uranium-series ages, indicates enhanced regional rainfall between ca 8.9Expand
40Ar/39Ar dating of hydrothermal activity, biota and gold mineralization in the Rhynie hot-spring system, Aberdeenshire, Scotland
This study presents a new high-precision 40Ar/39Ar age for the Devonian hot-spring system at Rhynie. Hydrothermal K-feldspar sampled from two veins that represent feeder conduits and a hydrothermallyExpand
Stalagmite evidence for the onset of the Last Interglacial in southern Europe at 129±1 ka
Multi-proxy data from an Italian stalagmite constrain the commencement of full Last Interglacial conditions in southern Europe at 129 +/- 1 ka, consistent with absolutely dated records currentlyExpand
87Sr/86Sr chemostratigraphy of Neoproterozoic Dalradian limestones of Scotland and Ireland: constraints on depositional ages and time scales
New calcite 87Sr/86Sr data for 47 limestones from the metamorphosed and deformed Neoproterozoic–Cambrian Dalradian Supergroup of Scotland and Ireland are used to identify secular trends in seawaterExpand
Stalagmite evidence for the precise timing of North Atlantic cold events during the early last glacial
Evidence of millennial-scale cold events following the last interglacial are well preserved in North Atlantic marine cores, Greenland ice, and pollen records from Europe. However, their timing wasExpand
Sources of sedimentary lipids deduced from stable carbon-isotope analyses of individual compounds
COMPOUND-specific isotope analysis by gas chromatography combined with isotope-ratio mass spectrometry (GC-IRMS)1,2 provides a new tool with which to study the carbon cycle at the molecular scale3.Expand