首页
登录
职称英语
Not only could Smith identify rock strata by the fossils they contained, he
Not only could Smith identify rock strata by the fossils they contained, he
游客
2025-02-05
19
管理
问题
Not only could Smith identify rock strata by the fossils they contained, he could also see a pattern emerging: certain fossils always appear in more ancient sediments, while others begin to be seen as the strata become more recent. By following the fossils, Smith was able to put all the strata of England’s earth into relative temporal sequence. About the same time, Georges Cuvier made the same discovery while studying the rocks around Paris. Soon it was realized that this principal of faunal(animal)succession was valid not only in England or France but
virtually
everywhere. It was actually a principle of floral succession as well, because plants showed the same transformation through time as did fauna. Limestone may be found in the Cambrian or—300 million years later—in the Jurassic strata, but a
trilobite
—the ubiquitous marine arthropod that had its birth in the Cambrian—will never be found in Jurassic strata, nor a dinosaur in the Cambrian. [br] In mentioning "
trilobite
," the author is making which of the following points?
选项
A、Fossils cannot be found in more than one rock stratum.
B、Faunal succession can help put rock layers in relative temporal sequence.
C、Faunal succession cannot be applied to different strata composed of the same kind of rock.
D、The presence of trilobite fossils makes it difficult to date a rock.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3944560.html
相关试题推荐
NotonlycouldSmithidentifyrockstratabythefossilstheycontained,he
NotonlycouldSmithidentifyrockstratabythefossilstheycontained,he
NotonlycouldSmithidentifyrockstratabythefossilstheycontained,he
NotonlycouldSmithidentifyrockstratabythefossilstheycontained,he
AshecollectedfossilsfromstratathroughoutEngland,Smithbegantoseet
AshecollectedfossilsfromstratathroughoutEngland,Smithbegantoseet
Ithasbeensaid,"Noteverythingthatislearnediscontainedinbooks."Co
Ithasbeensaid,"Noteverythingthatislearnediscontainedinbooks.“Compare
Thesedatawillbeofconsiderableuseforidentifyingandanalyzingenvironment
Thesedatawillbeofconsiderableuseforidentifyingandanalyzingenvironment
随机试题
【M1】Mostpeoplewoulddescribewaterlikeacolorlessliquid.【M2】Theywould
TheparticularsymbolicsignificanceofthecavepaintingsinsouthwesternF
[originaltext]M:Goodmorning,Jane.Howareyou?W:Oh,fine.Idon’thaveto
[img]2011q4/ct_eyyjsbz2009_eyyjsbreadb_0397_20111[/img]Day
某工业企业2016年5月末的固定资产净值为1115万元,6月末在岗职工600人,
急性循环充血为急性肾小球肾炎急性期的并发症,其药物治疗不包括A.氢氯噻嗪B.硝普
普鲁卡因胺A.Ia类 B.Ib类 C.Ⅱ类 D.Ⅲ类 E.Ⅳ类
(2018年真题)快递员小强进城务工之初,没有朋友,与同事相处也不融洽,情绪较
世界上最大的群岛是()。A.托克劳群岛 B.马来群岛 C.舟山群岛 D.维
借贷记账法下,余额试算平衡的直接依据是()。A.资金运动规律 B.财务状况等
最新回复
(
0
)