PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

An important discovery of marine fossils in the upper part of the Permian Linxi Formation, China

2013-12-07
(Press-News.org) Contact information: YAN Bei
yanbei@scichina.org
86-106-400-8316
Science China Press
An important discovery of marine fossils in the upper part of the Permian Linxi Formation, China

In a recent study, large numbers of bryozoan and other typical marine fossils were discovered for the first time in the thick limestone layers and lenses of the upper part of the Linxi Formation of the Guandi section, Linxi County, eastern Inner Mongolia. These marine fossils provide the first evidence for the Xingmeng area being in a marine or mainly marine environment at the end of the later part of the late Permian.

This paper, entitled "Discovery of marine fossils in the upper part of the Permian Linxi Formation in Lopingian, Xingmeng area, China" is published in Chinese Science Bulletin, 2013 (33), with ZHANG Yongsheng (of the Institute of Mineral Resources, CAGS) and TIAN Shugang (of the Institute of Geology, CAGS) as the corresponding authors.

There has been a long history of debate over two major geological issues in the Xingmeng area. The first concerns the final amalgamation of the North China Plate, the Siberian Plate and several intermediate massifs in the area, and the other is about the folding and lifting of the Xingmeng Trough. Disagreements have arisen because of uncertainties about the tectonic-paleogeographical environment of the upper Permian deposits of the Linxi Formation. The Linxi Formation (upper Permian) is generally considered to be either (a) an exclusively continental deposit or (b) separated into earlier marine-terrigenous facies (the Lower to Middle Linxi Formation) and later continental deposits (the Upper Linxi Formation).

This study describes the discovery of large numbers of bryozoan and other typical marine fossils in the thick limestone layers and lenses of the upper part of the Linxi Formation in the Guandi section of Linxi County in eastern Inner Mongolia (Figure 1). At the same time, abundant bryozoan fossils were found in sedimentary tuff slices collected from the upper part of the Taohuayingzi Formation in the Taohuayingzi section in Ar Horqin Banner, and many crinoid stems were found in the dark shale of the Yangjiagou Formation in the Yangjiagou section, Jiutai County, Jilin Province.

From an ecological viewpoint, most modern bryozoans are marine, and they can survive in tropical, temperate, and polar oceans. Only a very small group (the Phylactolaemata) lives in fresh water, but these do not have a mineralized skeleton and thus do not preserve as fossils. Bryozoan adaptability is very strong. They are found distributed from coastal tidal flats to the deep sea at depths of 5500 m.

Sponges are generally considered to be the most primitive and the lowest marine multicellular animal. Sponge body walls are supported by needle-shaped elements, called spicules. Sponge spicules can be preserved as fossils in ancient strata. Crinoids are a type of echinoderm, first found in Carboniferous strata. Although they are animals, they live in the sea and resemble plants, hence the name sea lily. Thus the bryozoan remains, sponge spicules and crinoids fossils in the upper Permian strata of this region are typical marine fossils.

This study provides new constraints on the final closure of the Xingmeng marine basin. It will promote changes in the way that petroleum research is undertaken in the region, especially regarding the potential for new oil and gas, and shale gas (or oil) prospects, in addition to other mineral exploration in the Upper Permian rocks in the Xingmeng region of NE China.



INFORMATION:

Corresponding Authors:

ZHANG Yongsheng:zys_601@126.com

TIAN Shugang:sgtian@cags.ac.cn

See the article:

ZHANG Y S, TIAN S G, LI Z S, GONG Y X, XING E Y, WANG Z Z, ZHAI D X, CAO J, SU K, WANG M. Discovery of marine fossils in the upper part of the Permian Linxi Formation in Lopingian, Xingmeng area, China. Chinese Science Bulletin, 2013(33)

Link: http://csb.scichina.com:8080/kxtb/CN/abstract/abstract512709.shtml

Science China Press Co., Ltd. (SCP) is a scientific journal publishing company of the Chinese Academy of Sciences (CAS). For 50 years, SCP takes its mission to present to the world the best achievements by Chinese scientists on various fields of natural sciences researches.

http://www.scichina.com/



ELSE PRESS RELEASES FROM THIS DATE:

Propagated sensation along the meridian exists objectively

2013-12-06
Propagated sensation along the meridian exists objectively However, as the propagated sensation along the meridian is a subjective feeling, there is no direct evidence for its presence. According to a study published in the Neural Regeneration Research (Vol. 8, No. ...

Aging process accompanied by decreased hippocampal synaptophysin

2013-12-06
Aging process accompanied by decreased hippocampal synaptophysin Caveolin-1 may be a new target for interfering with age-dependent decline in synaptic plasticity. To explore the relationship between synaptic plasticity in the aging process and changes in learning ...

Progesterone changes may cause cognitive impairment of Alzheimer's disease patients

2013-12-06
Progesterone changes may cause cognitive impairment of Alzheimer's disease patients Steroid hormones and their metabolites within the central nervous system are commonly defined as neuroactive steroids or neurosteroids. Although neuroactive steroids have been shown ...

A*STAR scientists discover novel hormone essential for heart development

2013-12-06
A*STAR scientists discover novel hormone essential for heart development This unusual discovery could aid cardiac repair and provide new therapies to common heart diseases and hypertension 1. Scientists at A*STAR's ...

Quantum effects help cells capture light, but the details are obscure

2013-12-06
Quantum effects help cells capture light, but the details are obscure Ultrashort laser pulses reveal that 'coherence' plays a subtle role in energy transfers Sophisticated recent experiments with ultrashort laser pulses support the idea ...

Penn study delivers protein across blood-brain barrier to degrade Alzheimer's plaques

2013-12-06
Penn study delivers protein across blood-brain barrier to degrade Alzheimer's plaques The body is structured to ensure that any invading organisms have a tough time reaching the brain, an organ obviously critical to survival. Known as the blood-brain ...

The heat is on...or off

2013-12-06
The heat is on...or off Having the sense to cut office energy bills Office buildings have an enormous carbon footprint, but often energy is being wasted maintaining empty rooms and spaces at a comfortable temperature. Research to be published in the International Journal of ...

Promising results for Swedish cancer drug candidate

2013-12-06
Promising results for Swedish cancer drug candidate A new study conducted by scientists from the Dana-Farber Cancer Institute at Harvard Medical School and Karolinska Institutet in Sweden presents very promising results for the treatment of the cancer form multiple ...

Surprising discovery: The skin communicates with the liver

2013-12-06
Surprising discovery: The skin communicates with the liver Researchers from the University of Southern Denmark have discovered that the skin is capable of communicating with the liver. The discovery has surprised the scientists, and they say that it may help our understanding ...

Human stem cells predict efficacy of Alzheimer drugs

2013-12-06
Human stem cells predict efficacy of Alzheimer drugs Researchers from the University of Bonn use reprogrammed patient neurons for drug testing Why do certain Alzheimer medications work in animal models but not in clinical trials in humans? A research team ...

LAST 30 PRESS RELEASES:

Brain stimulation can boost math learning in people with weaker neural connections

Inhibiting enzyme could halt cell death in Parkinson’s disease, study finds

Neurotechnology reverses biological disadvantage in maths learning

UNDER EMBARGO: Neurotechnology reverses biological disadvantage in maths learning

Scientists target ‘molecular machine’ in the war against antimicrobial resistance

Extending classical CNOP method for deep-learning atmospheric and oceanic forecasting

Aston University research: Parents should encourage structure and independence around food to support children’s healthy eating

Thunderstorms are a major driver of tree death in tropical forests

Danforth Plant Science Center adds two new faculty members

Robotic eyes mimic human vision for superfast response to extreme lighting

Racial inequities and access to COVID-19 treatment

Residential segregation and lung cancer risk in African American adults

Scientists wipe out aggressive brain cancer tumors by targeting cellular ‘motors’

Capturability distinction analysis of continuous and pulsed guidance laws

CHEST expands Bridging Specialties Initiative to include NTM disease and bronchiectasis on World Bronchiectasis Day

Exposure to air pollution may cause heart damage

SwRI, UTSA selected by NASA to test electrolyzer technology aboard parabolic flight

Prebiotics might be a factor in preventing or treating issues caused by low brain GABA

Youngest in class at higher risk of mental health problems

American Heart Association announces new volunteer leaders for 2025-26

Gut microbiota analysis can help catch gestational diabetes

FAU’s Paulina DeVito awarded prestigious NSF Graduate Research Fellowship

Champions for change – Paid time off initiative just made clinical trials participation easier

Fentanyl detection through packaging

Prof. Eran Meshorer elected to EMBO for pioneering work in epigenetics

New 3D glacier visualizations provide insights into a hotter Earth

Creativity across disciplines

Consequences of low Antarctic sea ice

Hear here: How loudness and acoustic cues help us judge where a speaker is facing

A unique method of rare-earth recycling can strengthen the raw material independence of Europe and America

[Press-News.org] An important discovery of marine fossils in the upper part of the Permian Linxi Formation, China