Sedimentary records of relative paleointensity of the geomagnetic field: theory and practice

L Tauxe - Reviews of geophysics, 1993 - Wiley Online Library
Sediments have proved irresistible targets for attempts at determining the relative variations
in the Earth's magnetic field because of the possibility of long and continuous sequences …

Deciphering records of geomagnetic reversals

JP Valet, A Fournier - Reviews of Geophysics, 2016 - Wiley Online Library
Polarity reversals of the geomagnetic field are a major feature of the Earth's dynamo.
Questions remain regarding the dynamical processes that give rise to reversals and the …

Effectiveness of the global protected area network in representing species diversity

ASL Rodrigues, SJ Andelman, MI Bakarr, L Boitani… - Nature, 2004 - nature.com
Abstract The Fifth World Parks Congress in Durban, South Africa, announced in September
2003 that the global network of protected areas now covers 11.5% of the planet's land …

An earlier origin for the Acheulian

CJ Lepre, H Roche, DV Kent, S Harmand, RL Quinn… - Nature, 2011 - nature.com
The Acheulian is one of the first defined prehistoric techno-complexes and is characterized
by shaped bifacial stone tools,,. It probably originated in Africa, spreading to Europe and …

Pleistocene evolution: Northern hemisphere ice sheets and North Atlantic Ocean

WF Ruddiman, ME Raymo, DG Martinson… - …, 1989 - Wiley Online Library
We analyze five high‐resolution time series spanning the last 1.65 my: benthic foraminiferal
δ18O and δ13O, percent CaCO3, and estimated sea surface temperature (SST) at North …

Sex increases the efficacy of natural selection in experimental yeast populations

MR Goddard, HCJ Godfray, A Burt - Nature, 2005 - nature.com
Why sex evolved and persists is a problem for evolutionary biology, because sex disrupts
favourable gene combinations and requires an expenditure of time and energy. Further, in …

Matuyama 41,000-year cycles: North Atlantic Ocean and northern hemisphere ice sheets

WF Ruddiman, M Raymo, A McIntyre - Earth and Planetary Science Letters, 1986 - Elsevier
During the middle Pleistocene, a change occurred in the climatic response of northern
hemisphere ice sheets and the high-latitude North Atlantic Ocean to orbitally controlled …

Late Pliocene variation in Northern Hemisphere ice sheets and North Atlantic deep water circulation

ME Raymo, WF Ruddiman, J Backman… - …, 1989 - Wiley Online Library
High‐resolution records of δ18O, δ13O, and percent CaCO3 from the late Pliocene North
Atlantic (Deep Sea Drilling Project sites 607 and 609) are presented and oxygen isotope …

The 41 kyr world: Milankovitch's other unsolved mystery

ME Raymo, KH Nisancioglu - Paleoceanography, 2003 - Wiley Online Library
For most of the Northern Hemisphere Ice Ages, from∼ 3.0 to 0.8 my, global ice volume
varied predominantly at the 41,000 year period of Earth's orbital obliquity. However, summer …

Astronomical calibration of the Matuyama-Brunhes boundary: Consequences for magnetic remanence acquisition in marine carbonates and the Asian loess …

L Tauxe, T Herbert, NJ Shackleton, YS Kok - Earth and Planetary Science …, 1996 - Elsevier
We have compiled 19 records from marine carbonate cores in which the Matuyama-Brunhes
boundary (MBB) has been reasonably well constrained within the astronomically forced …