Hainan Island connected with continent 400,000 years ago, research

时间：2007-12-07 07:34:50

（单词翻译:单击）

Chinanews, Haikou, Dec. 6 – Some 400,000 years ago, Hainan Island was still connected with the mainland. At that time, animals such as giant pandas and great apes moved to settle in Hainan through a land bridge, said Huang Wanbo, a researcher at the Institute of Vertebrate Palaeontology and Palaeoanthropology(IVPP) under the Chinese Academy of Social Sciences, the Hainan Daily reported.

 

About 400,000 years ago, all animal species that appeared in Hainan moved to the area through a land bridge presently known as the Qiongzhou Strait, the researcher said.

 

He reached the conclusion after examining the fossils dug from a quarry1 and a cave at the Changjiang Li Autonomous2 County. The fossils belonged to 20 animal species.

 

Some five million years ago, Hainan Island took its basic shape under three strong tectonic movements, the Indosinian movement, the Yanshanian movement and the Himalayan movement. At that time, due to an active tectonic movement occurring on the island, volcanoes located from the southern part of the island to Leizhou Peninsula erupted. After the eruption3, a basaltic layer was formed, which later changed the island’s geological feature, Huang said.

 

At present, scientists still do not know when the land bridge broke and why it vanished. To answer these questions, scientists may need to make further studies about the fossils and analyzed4 the earth crust. Also, the question of how land animals evolved on the island and adapted to the new environment is another enigma5.

 
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1 quarry ASbzF     
n.采石场；v.采石；费力地找
参考例句：
  • Michelangelo obtained his marble from a quarry.米开朗基罗从采石场获得他的大理石。
  • This mountain was the site for a quarry.这座山曾经有一个采石场。
2 autonomous DPyyv     
adj.自治的；独立的
参考例句：
  • They proudly declared themselves part of a new autonomous province.他们自豪地宣布成为新自治省的一部分。
  • This is a matter that comes within the jurisdiction of the autonomous region.这件事是属于自治区权限以内的事务。
3 eruption UomxV     
n.火山爆发；（战争等）爆发；（疾病等）发作
参考例句：
  • The temple was destroyed in the violent eruption of 1470 BC.庙宇在公元前1470年猛烈的火山爆发中摧毁了。
  • The eruption of a volcano is spontaneous.火山的爆发是自发的。
4 analyzed 483f1acae53789fbee273a644fdcda80     
v.分析( analyze的过去式和过去分词 )；分解；解释；对…进行心理分析
参考例句：
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程，因为对他来说，爱是个不可分析的迷。 来自《简明英汉词典》
5 enigma 68HyU     
n.谜，谜一样的人或事
参考例句：
  • I've known him for many years,but he remains something of an enigma to me.我与他相识多年，他仍然难以捉摸。
  • Even after all the testimonies,the murder remained a enigma.即使听完了所有的证词，这件谋杀案仍然是一个谜。

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