We review the ages of Quaternary magnetic polarity reversals and magnetic excursions.
Improvements in radioisotopic 40 Ar/39 Ar dating of reversals and excursions reflect the use …

Reversals and excursions of Earth's geomagnetic field create marker horizons that are
readily detected in sedimentary and volcanic rocks worldwide. An accurate and precise …

Organized flaking techniques to obtain predetermined stone tools have been traced back to
the early Acheulean (also known as mode 2) in Africa and are seen as indicative of the …

The timing of early human dispersal to Asia is a central issue in the study of human
evolution. Excavations in predominantly lacustrine sediments at Majuangou, Nihewan basin …

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 …

This geologic map and its digital databases present the geology of the eight major islands of
the State of Hawai 'i. The map should serve as a useful guide to anyone studying the …

When five Matuyama‐Brunhes (M‐B) boundary records from the North Atlantic are placed
on isotope age models, produced by correlation of the δ18O record directly or indirectly to …

If a common ancestor of all living humans is defined as an individual who is a genealogical
ancestor of all present-day people, the most recent common ancestor (MRCA) for a …

A new composite BDP-96 biogenic silica record over the entire Pleistocene was generated
by splicing BDP-96-1 and BDP-96-2 drill cores from Lake Baikal, crosschecked against a …

Geomagnetic excursions are short‐lived episodes when Earth's magnetic field deviates into
an intermediate polarity state. Understanding the origin, frequency, amplitude, duration, and …