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Tektites, which may have been propelled to Earth from lunar

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Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post Updated on: 04 Jul 2018, 01:05
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A
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Question Stats:

67% (00:35) correct 33% (00:47) wrong based on 146 sessions

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Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian, but their chemical composition is different than any terrestrial lava; they contain far less water than obsidian does and none of its characteristic microcrystals.

(A) is different than any terrestrial lava; they contain
(B) is different than any terrestrial lava's, containing
(C) is different from that of any terrestrial lava; they contain
(D) differs from any terrestrial lava in containing
(E) differs from that of any terrestrial lava's, containing

SCIENTIFIC AMERICAN
August 1978
Volume 239, Issue 2

In widely scattered locations around the world small glassy pebbles of curious surface configuration and distinctive composition are found, often in vast "strewn fields" that stretch across land masses and, on the evidence of cores drilled from the deep-sea floor. across intervening seas and oceans. These tektites. as they are called from the Greek word tektos, meaning molten, are much like the volcanic glass obsidian, but their chemical composition is different from that of any terrestrial lava and they contain far less water and none of obsidian's characteristic microcrystals. And, as the Austrian mineralogist Josef Mayer pointed out in 1787, no one has ever found the Mutterstein. or mother lode, of a field of tektites. They cannot, therefore. be the product of terrestrial volcanism.

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Originally posted by banerjeea_98 on 26 Apr 2005, 11:38.
Last edited by hazelnut on 04 Jul 2018, 01:05, edited 3 times in total.
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 26 Apr 2005, 12:54
C)...the right idiom is "different from". A) and B) are out. D) is out because it compares chemical composition to the lava. E) is out because it is not clear if "containing" refers to "lava" or to "composition".
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 26 Apr 2005, 16:55
banerjeea_98 wrote:
Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian, but their chemical composition is different than any terrestrial lava; they contain far less water than obsidian does and none of its characteristic microcrystals.
(A) is different than any terrestrial lava; they contain
(B) is different than any terrestrial lava’s, containing
(C) is different from that of any terrestrial lava; they contain
(D) differs from any terrestrial lava in containing
(E) differs from that of any terrestrial lava’s, containing


I think C is flawed too ..."They" looks suspicious....I would go with D
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 26 Apr 2005, 19:16
It is (C) for Parallelism.

(D): "in containing far less water than obsidian does .." : wrong : "does" does not have any verb to refer.
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 28 Apr 2005, 11:07
banerjeea_98 wrote:
OA is "C"


A, B eliminated because of "different from".....

D bad comparison.

Both C and E seen right.

I chose C. But i aint sure what is wrong with E.

IC = Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian, but their chemical composition differs from that of any terrestrial lava’s

Phrase [Participle modifying Subject Teckites] = containing far less water than obsidian does and none of its characteristic microcrystals.

IC, Phrase

Any explain what is wrong with E???
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 29 Apr 2005, 03:20
E says as if the chemical composition contains far less water-------

but it is tektites, which contains far less water-----.

thats why E is wrong and C correct.
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 29 Apr 2005, 13:41
dipaksingh wrote:
E says as if the chemical composition contains far less water-------

but it is tektites, which contains far less water-----.

thats why E is wrong and C correct.


To me here is what E says:

Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian, but their chemical composition differs from that of any terrestrial lava’s, containing far less water than obsidian does and none of its characteristic microcrystals.

the phrase in green is an absolute phrase modifying the subject Tektities. Absolute phrases dont have to modify the noun right next to it. It could modify a) a subject of the previous clause b) object of a previous clause or c) the entire clause.

Any solid explanations why?
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 29 Apr 2005, 19:41
gmataquaguy,

"their chemical composition differs from that of any terrestrial lava’s, containing far less water than obsidian does and none of its characteristic microcrystals". --- this is a independent clause joined to another independent clause with the help of a coordinating conjunction "but".

the other I.clause is " Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian"

again the possesive form (lava's) is wrong.

E compares "chemical composition of tektitis" with "chemical composition of lava's containing far less water----" isn't it wrong.
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 01 May 2005, 16:10
dipaksingh wrote:
gmataquaguy,

"their chemical composition differs from that of any terrestrial lava’s, containing far less water than obsidian does and none of its characteristic microcrystals". --- this is a independent clause joined to another independent clause with the help of a coordinating conjunction "but".

the other I.clause is " Tektites, which may have been propelled to Earth from lunar volcanoes, are much like the volcanic glass obsidian"

again the possesive form (lava's) is wrong.

E compares "chemical composition of tektitis" with "chemical composition of lava's containing far less water----" isn't it wrong.


I dont agree with your comparison. Here is why:

Here is what the IC after but says in E.

their [Tekkites] chemical composition differs from that of any terrestrial lava’s.
Step1:
The possessive form of lava is correct because enables comparison between Teckites's chemical composition and lava's.

This statement is analogous to

My car is faster than Jane's ----> Here Jane's = Jane's care [implicit].

Step2:

IC, containing far less water than obsidian does and none of its characteristic microcrystals.

I'm saying that "containing....." isnt a participle phrase. Its an absolute phrase that modifies the subject teckites.

Please read absolute phrases from [http://webster.commnet.edu/grammar/phrases.htm#participial] and http://www.gmatclub.com/phpbb/viewtopic.php?t=1540

and you will see why i'm asking these questions.
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 01 May 2005, 17:19
either you have the "possesive form" or you use the construction "that of", but not both.

taking your example-

My car is faster than Jane's ----> - CORRECT

My car is faster than that of Jane ----> - CORRECT

My car is faster than that of Jane's ----> INCORRECT
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 01 May 2005, 18:54
dipaksingh wrote:
either you have the "possesive form" or you use the construction "that of", but not both.

taking your example-

My car is faster than Jane's ----> - CORRECT

My car is faster than that of Jane ----> - CORRECT

My car is faster than that of Jane's ----> INCORRECT


Di,
Good Call - i didnt know about this rule!!! Will the OP please confirm that the aphostrophe wasnt a typo. If not then your explanation is good!! Could you point me to some online documentation on the aforementioned rule. Just wanna read it to validate some of my other queries about possesives.....
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 02 May 2005, 09:17
sorry i dont remember at present any site where you will get this ,but please check "comparision" section on any of the "english usage" sites. most probably you will get it some where.
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 08 May 2005, 18:07
gmataquaguy wrote:
dipaksingh wrote:
either you have the "possesive form" or you use the construction "that of", but not both.

taking your example-

My car is faster than Jane's ----> - CORRECT

My car is faster than that of Jane ----> - CORRECT

My car is faster than that of Jane's ----> INCORRECT


Di,
Good Call - i didnt know about this rule!!! Will the OP please confirm that the aphostrophe wasnt a typo. If not then your explanation is good!! Could you point me to some online documentation on the aforementioned rule. Just wanna read it to validate some of my other queries about possesives.....



Ban, could you please reconfirm that the aphostrophe wasnt a typo
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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New post 08 May 2005, 20:15
dipaksingh wrote:
either you have the "possesive form" or you use the construction "that of", but not both.

taking your example-

My car is faster than Jane's ----> - CORRECT

My car is faster than that of Jane ----> - CORRECT

My car is faster than that of Jane's ----> INCORRECT


Yes, that's exactly the reason I would choose C over E.
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Re: Tektites, which may have been propelled to Earth from lunar  [#permalink]

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Re: Tektites, which may have been propelled to Earth from lunar &nbs [#permalink] 01 Nov 2018, 18:44
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