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People who have been to Turpan, the deepest feelings is above 40 degrees Celsius heat. There has been a "Flaming" it?
?2012, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences researcher Wang,jordan pas cher, Ph.D., Wan Ming ceremony, Missouri University of Science and Technology, Professor Professor Yang Wan et al., In Xinjiang discovered a "Steinmann septate pith pine" fossil, after more than two years research,8C8BHS8e3G, they restored the 255 million years ago,peuterey outlet milano, Turpan - Hami Basin "cool memories", where warm and humid, the annual average temperature of 12 to 14 degrees Celsius, the average annual rainfall of 900 to 1240 mm. Related research recently published in the internationally renowned geoscience journal "paleogeography, paleoclimate,moncler outlet online, paleoecology" on.
Modern Express Reporter Hu Yumei
Tree "tree" rings is not obvious
"This is our research petrified wood." Wang's computer has a chart,moncler milano, graph petrified wood fossil, about 15 cm in diameter.
"It really is a tree of life in 255 million years ago, pine, now extinct. It should be very long,4mY8hvbn6J, we found only a part of it." Wang said that their study is a fossil conifers, It lived what age, it is how dead? These are not known. To be sure, the tree of life in the Permian mass extinction 10 million years before the end of the Permian mass extinction,air jordan femme, and it belongs to has "disappeared" category.
Wang They put the tree named "Steinmann septate pith pine," to commemorate the ancient Chinese study of botany and continental strata pioneer Adams Xingjian Academy of Sciences. They fossils slices, careful study under the microscope. Time has passed 255 million years,Iw2j4cc5nG, but the tree is still intact xylem cells, the cells above the hole, big and small, in the middle there is one small interval ...... "This tree's growth rings is not obvious, the fossils Cell size is gradual. "Wan Ming-li said,woolrich parka, with a microscope, they also found a tree" lifetime "situation is not good, it was mites Kenshi, the body is full of mites droppings.
255 million years ago, Turpan annual average temperature is about 13 ℃
. "Plant is climate change 'thermometer', then the paleoclimate,A6ske9EmNP, paleoenvironment how, through plant can interpret it,peuterey outlet," Wang Jun,louboutin, for Turpan - Hami Basin paleoclimate, Professor Yang Wan has been studied for more than 10 years, Previously, the study of plant scientists around the lithosphere, soil, suggesting a general situation where the ancient climate,2MXm1P8736,moncler piumini, but it has been a lack of botanical evidence.
In fact, the plants on the climate, the more sensitive to carbon dioxide, rain, high temperature, when the trees grow relatively fast,0Tk1Y70cL2, petrified wood in the cell will be relatively large; the weather is cold and relatively dry, tree growth will be slower, petrified wood cells will be more compact.
Through the "Steinmann septate pith pine" fossil studies, Wan Ming ceremony to restore the 255 million years ago, the climate in Turpan. . "There is not a natural Huoyanshan, 255 million years ago, there is very cool,spaccio moncler, moist" Wan Ming-li said, then,moncler piumini, Turpan - Hami basin at about 50 degrees north latitude, and the annual average temperature at 12-14 ℃, annual average rainfall 900-1240 mm.
And today's climate causes the Turpan Basin,N243K968w6, Wan Ming ceremony that it might appear relevant and Bogda Mountains. Dating back about 250 million years ago, because of the Tarim and Junggar Plate - Turpan micro-plate collision, plus the Cenozoic plate motion collision, extrusion,CYNRJwE32g, forming a Bogda Mountains. "Bogda Mountains, thereby affecting the atmospheric circulation, blocking the rain the clouds, causing drought in Turpan Basin today."
For this study, Wang Jun,woolrich parka, their ultimate goal is to explore the period dating back 300 million years to 250 million years on Earth suddenly thriving biodiversity extinction reasons. "Steinmann septate pith pine is before the end-Permian mass extinction creatures disappear. At that time, 95 percent of the world's marine life and 75 percent of terrestrial organisms in the mysterious disappearance of 'short-term' inside."
(Original title: 255 million years ago, Turpan not brazier very cool)