Soil Archives | Geology Page

Clay soil sticks together. Photo by Lynn Ketchum.

Like diamonds, clay soils are forever

February 7, 2022

Researchers collected and analyzed permafrost from four sites in the Yukon to develop a new technique to tease ancient DNA from soil, pulling the genomes of hundreds of extinct animals and thousands of plants from less than a gram of sediment. Credit: Tyler Murchie/ McMaster University

Thousands of species recorded in a speck of soil

September 12, 2020

$-A grain-size comparator chart (to scale). The chart shows the different size fractions from silt (63 µm) through to large cobbles (128256 mm). Such charts are useful for field comparisons.$

Grain Size : What is Grain Size? How is Grain Size...

August 21, 2020

Types of Rocks

March 20, 2017

From rocks in Colorado, evidence of a ‘chaotic solar system’

February 22, 2017

Study tracks ‘memory’ of soil moisture

January 16, 2017

Report calls for improved methods to assess earthquake-caused soil liquefaction

December 21, 2016

Marine sediments record variations in the Earth’s magnetic field

November 29, 2016

Study finds Earth’s soils hosted life early

November 18, 2016

Evidence of first chief indicates Pacific islanders invented a new society...

October 18, 2016

Modeling the contractive behavior of soft clay in a heating test

October 8, 2016

Soil will absorb less atmospheric carbon than expected this century, study...

September 23, 2016

New analyses of Martian chemical maps suggest water bound to sulfates...

January 6, 2015

All

Human body has gone through four stages of evolution

September 3, 2015

South American volcano showing early warning signs of ‘potential collapse’

February 21, 2020

Death by volcano?

May 30, 2017

Amateur paleontologist finds rare fossil of fish in Arizona

September 4, 2015

Seismic ‘CT scans’ reveal deep earth dynamics