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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Thu Jul 29, 2010 4:21 am 
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Toko wrote:
Please guess the geological trip throuh 6 Kruger Geozones
Your trip starts in a camp, situated in thornveld on Gabbro. Gabbro is a coarse grained igneous or volcanic rock with composition similar to basalt. The Gabbro intrusion is characterized by a thorn savanna with a dense grass cover. The scattered trees and wide-open plains covered by sweet grass attract many browsers that forage round the stony area.
You leave this area and enter an area of Bushwillow Woodlands where the geological substrata are Granite and Gneiss. There are a lot of Acacia nigrescens. You stop for a look out on a get out point and sit on a beautiful bench overlooking the woodland.
Here is again a geological change, you enter an area of Gabbro.
You cross an untarred road and you come to the geological formation called Ecca-shales. The terrain is called Acacia welwitschii Thickets on Karoo Sediments. It is low lying and reasonably flat. It extends as a narrow strip from Crocodile Bridge northwards. The thickets are seldom broader than four kilometres. The landscape is unique considering that the vegetation is dominated by Acacia welwitschii subsp. Delagoensis. This landscape carries what is possibly the largest biomass of game in the KNP. You continue and drive along that tourist route to a dam which is at an elevation around 20 metres lower than the surrounding bush.
Further east you reach one of the best game viewing areas in Kruger, the Sclerocarya caffra and Acacia nigrescens Savanna on Basalt. This landscape extends from the Crocodile River to just north of Satara with the Lebombo Mountains as the eastern and the Karoo sediments as the western boundary. It is one of the largest landscapes and occupies 7.2 percent of the KNP. Before you enjoy the open tree savanna you stop for a meal in a camp restaurant. Then you drive in southern direction, cross a river and you turn left. You are on a tar road and reach two watering holes.
There are lots of animals to be seen on the drive up to a Picnic Spot. It is a beautiful place overlooking a river where a largish pool has formed. There is a bird hide on the river, about 5 km from the picnic site to the east, there is the Lebombo Mountain Bushveld on Rhyolite soils. The Lebombo Mountains are situated almost 100 metres higher than the adjacent basalt plains.


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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Thu Jul 29, 2010 4:50 am 
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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Fri Jul 30, 2010 1:18 am 
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Location: Daar waar die bobbejane hul borshare kam
onewithnature wrote:
... slightly ...
:huh: A follow-up question is quite different than a complete new question...


-----


Toko, I think you are travelling from Orpen to Satara, sit at Baboon View Point and past Girivana and Nsemani dams... This is quick thinking and not at all researched. Tomorrow I shall get to this... but I see other clever quizzers lurking, such as Bosnimfie and Koedoe ... and tomorrow you might have your answer before I can get to it. :thumbs_up:

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Fri Jul 30, 2010 6:58 am 
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This is definitely a west to east drive, probably from Orpen to Nwanetsi. Gabbro at Orpen, Granite and Gneiss is at Bobbejaan Krans and Nwanetsi at the Rhyolite.

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Fri Jul 30, 2010 9:29 am 
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Okay, beginning at Orpen on Gabbro, we travel along the H7 in an easterly direction, entering the Granite/Gneiss region soon after, and stopping at Bobbejaan Krans Lookout in the heart of this geological area.
We head back into Gabbro again, then drive through Ecca Shales about a third of the distance past the S36 (between S36 and H1-3).
About the last third of the S36-H1-3 distance, we enter the large Basalt areas, which continue right up until the S41 along the entire length of the H6. We stop at Skukuza on the way for a meal.
Finally, by the Lebombos, we enter the "young" Rhyolite formations, wherein is situated Nwanedzi picnic spot and the Sweni birdhide very close by on the S37.

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Fri Jul 30, 2010 4:50 pm 
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Well done Elzet and Own :thumbs_up:

I think, I should give IT to Own, because of the detailled description.


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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Fri Jul 30, 2010 6:31 pm 
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:thumbs_up: Toko, great Q. :clap: :clap:

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Sat Jul 31, 2010 1:50 am 
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Thanks Toko ... BBL

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Sun Aug 08, 2010 8:39 am 
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:whistle:

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Sun Aug 08, 2010 9:35 am 
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:whistle: :whistle: Soon ... :wink:

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Sun Aug 08, 2010 9:41 am 
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:whistle: :whistle: Sooner than later?

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Sun Aug 08, 2010 12:46 pm 
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:wink:

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Tue Aug 10, 2010 12:10 am 
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Which statements are TRUE regarding BASALT:

a. Basalt is a coarse-grained rock.
b. Basalt has a composition similar to gabbro.
c. Basalt is usually pale-grey in colour.
d. The Olympus Mons volcano on the planet Mars is composed of Basalt.
e. Basalt is produced mostly from lava flows?

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Sun Aug 15, 2010 3:41 am 
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Well ...?

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 Post subject: Re: Geology Quiz (RV)
Unread postPosted: Sat Aug 21, 2010 12:30 am 
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If no response soon, answer to follow. :whistle:

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