Results 101 to 110 of about 10,968 (159)

Incision history of Glenwood Canyon, Colorado, USA, from the uranium-series analyses of water-table speleothems

International Journal of Speleology, 2013
Uranium-series analyses of water-table-type speleothems from Glenwood Cavern and “cavelets” near the town of Glenwood Springs, Colorado, USA, yield incision rates of the Colorado River in Glenwood Canyon for the last ~1.4 My.
Victor J. Polyak, Harvey R. DuChene, Donald G. Davis, Arthur N. Palmer, Margaret V. Palmer, Yemane Asmerom   +5 more
doaj   +1 more source

Borneo Stalagmite Evidence of Significantly Reduced El Niño‐Southern Oscillation Variability at 4.1 kyBP

Geophysical Research Letters
The timing and geographic extent of a potential “4.2 ky event” remain highly contested. Here we present records of ENSO variability at 3.8 kyBP and 4.1 kyBP derived from a Borneo stalagmite, which suggest a significant change in ENSO properties between ...
C. M. Theaker, S. A. Carolin, C. C. Day, K. M. Cobb, S. Chen, P. R. Grothe, H. O. Couper   +6 more
doaj   +1 more source

An optimized thermal extraction system for preparation of water from fluid inclusions in speleothems.

Geologica Acta, 2011
The fluid inclusions present in speleothems (secondary mineral deposits formed in caves) are a relict sample of the parent seepage water from which the speleothem was deposited and determination of their composition can solve the palaeotemperature ...
E. CABALLERO, J.A. VERA, B. ANDREO
doaj  

The formation and sedimentary infilling of the Limeworks Cave, Makapansgat, South Africa [PDF]

, 2003
Main articleThe remnant cavern of the Limeworks australopithecine site has a number of special features. Firstly, unlike Swartkrans and Sterkfontein, which developed in relatively flat relief, the Limeworks Cave developed as part of a mountain karst ...
Herries, Andy I. R., Kuykendall, K., Latham, Alfred G.   +2 more
core  

Speleothem microstructure/speleothem ontogeny: a review of Western contributions

International Journal of Speleology, 2012
Mineral ontogeny is the study of the growth and development of mineral deposits in general and, in the present context, speleothems in particular. Previous researchers, mainly in Russia, have developed a nomenclatural hierarchy based on the forms and ...
White William B.
doaj  

Speleothems [PDF]

, 2006
Borsato, A, Fairchild, Ian J, Frisia, S, Tooth, A F   +3 more
core   +1 more source

Editorial: Cave Deposits: Processes, Approaches and Environmental Significance

Frontiers in Earth Science, 2022
Leonardo Piccini, Eleonora Regattieri, Andrea Zerboni, Aurel Perşoiu, Aurel Perşoiu   +4 more
doaj   +1 more source

The strength, position, and width changes of the intertropical convergence zone since the Last Glacial Maximum. [PDF]

Proc Natl Acad Sci U S A, 2023
Yuan S, Chiang HW, Liu G, Bijaksana S, He S, Jiang X, Imran AM, Wicaksono SA, Wang X.   +8 more
europepmc   +1 more source

Scientific drilling of speleothems – a technical note

International Journal of Speleology, 2012
This short article provides detailed descriptions of custom-made and commercially available hand-held drilling gear and options for water-flushing units specifically designed to obtained good-quality core material from speleothems even in remote cave ...
Spötl Christoph, Mattey David
doaj  

Monsoon differences in South Asia and East Asia during the penultimate deglaciation revealed by speleothem oxygen isotopes. [PDF]

Sci Rep
Zhao J, Cui J, Pan L, Luo Q, Dong X, Wang J, Wang K, Cheng H.   +7 more
europepmc   +1 more source