UF study: Barren Siberia, of all places, may be original home to animal life

based on the magnetic properties of rocks, the other based on the evolution of trilobites.

When rocks are formed, their magnetic minerals align to the earth's magnetic field, providing Meert the clues he needed to plot the original locations of his specimens on a globe. Carbon dating of radioactive minerals in the rocks also revealed when they were formed. By combining the formation dates with the location data, Meert deduced the whereabouts of the continents over the ages. Lieberman's research, by contrast, focused on using fossil records to study the evolutionary patterns of early life in insects and crustaceans, especially trilobites the heavily armored, once-common arthropods that left millions of fossils around the globe before their extinction 250 million years ago. These patterns then pointed toward a likely continental breakup and drift scenario.

Working independently, the UF and KU geologists each determined that the southern supercontinent began breaking up around 580 million years ago. The separate continents drifted northward toward the equator at about six inches per year, with this relatively rapid movement ending about 500 million years ago, they found.

Meert's conclusions were based on research on dozens of rocks from locations ranging from Norway to Kenya to Madagascar. Lieberman drew his findings from comparisons of the physical characteristics, such as the number of body segments, of thousands of fossilized trilobites from different continents listed in a KU computer database. By grouping those with similar characters together, he determined where different groups originated and how closely related they were.

While six inches is fast by comparison to today's continental movement of speed of one to two inches per year, it is far slower than that proposed by another prominent theory on early continental movement. That theory, known to scientists as "inertial interchange true polar wander," held the continents rotated fro

Contact: Joe Meert
University of Florida

Page: 1 2 3

Related biology news :

1. Chernobyl study: Risk of thyroid cancer rises with radiation dose
2. UW study: Migrating birds offer insight into sleep
3. Comprehensive study: We know little about environmental effects on kids
4. UW study: Babys face lights up emotional center of new moms brain
5. UF study: World shark attacks sink again, may signal long-term trend
6. Fox Chase Cancer Center study: Novel DNA-repair gene mutation can cause resistance to cancer drugs
7. New study: percentage of babies born with intestinal birth defect growing in U.S., N.C.
8. MIT study: Hydrogen car no environmental panacea
9. UF study: Calorie restriction reduces age-related brain cell death
10. USF study: Nicotine antagonist relieves depression in children with Tourettes
11. Independent study: DEET products superior for fending off mosquito bites

Post Your Comments:

(Date:11/11/2019)... ... November 11, 2019 , ... MicroGenDX, ... played a key role in the award-winning study “Next Generation Sequencing for the ... The molecular diagnostic laboratory processed samples using Next Generation DNA Sequencing to examine ...
(Date:11/9/2019)... ... , ... SiteSeer Technologies, creator of SiteSeer Professional retail site selection software, is ... SiteSeer. The boutique real estate developer of single and multi-tenant buildings on sites ranging ... own analysis of markets. , Geoffrey Kerth, manager of GPK Acquisitions, says that ...
(Date:11/9/2019)... ... November 08, 2019 , ... ... specialized histology, pathology, biomarker development, and archiving services for the biopharmaceutical, medical ... of Histo-Scientific Research Laboratories (HSRL), Vet Path Services (VPS) and Tox Path ...
Breaking Biology News(10 mins):
(Date:11/5/2019)... ... November 05, 2019 , ... Focal Healthcare , an ... its Fusion Bx 2.0 prostate fusion biopsy solution. By combining information from multiparametric ... will give urologists across Europe the ability to perform targeted transrectal and transperineal ...
(Date:11/2/2019)... ... 2019 , ... A clinical trial usually involves many different ... principal investigators, supply chain managers, manufacturers, IRT, CRAs and so on. Lack of ... data, potentially leading to patient risk. , By having a single source of ...
(Date:11/2/2019)... ... 31, 2019 , ... drug360 graph, a breakthrough knowledge graph ... brings tellic’s expertise in biomedical language processing and machine learning to bear on ... genes, diseases, variants, phenotypes, and other biomedical entities. Researchers and analysts can ...
(Date:10/30/2019)... ... 30, 2019 , ... Western University of Health Sciences held ... play in educating the next generation of health care providers. , The event, ... WesternU administrators and representatives of companies working with the University on a range ...
Breaking Biology Technology:
Cached News: