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Stratification croisée dans les grès

A cache by ddl49 Send Message to Owner Message this owner
Hidden : 06/08/2019
Difficulty:
1.5 out of 5
Terrain:
1 out of 5

Size: Size: other (other)

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Geocache Description:


Une stratification croisée
La stratification croisée hummocky (en anglais abrégé HCS) est un type de structure sédimentaire trouvée dans les grès. C'est une forme de lit croisé généralement formé par l'action de grosses tempêtes, telles que les ouragans. Cela prend la forme d'une série de formes de "sourire" qui se recoupent.

Exemple de stratification croisée


Sur cette photo de conglomérat, les marques d'ondulation, d'oscillation, la stratification croisée et les lits de tempête indiquent que le plateau peu profond était dominé par les vagues et les tempêtes.


Les questions:

RAPPEL: PAS DE BOITE A TROUVER SUR PLACE...
POUR VALIDER CETTE CACHE, REPONDEZ AUX QUESTIONS SUIVANTES:
1) Que signifie l’abréviation anglaise HCS ?
2) Sous le cache jaune, quelle est la taille du HCS et selon vous sa composition ?
3) Photo optionnelle sans dévoiler le HCS !!!
Loguez cette cache "Found it" et envoyez-moi vos propositions de réponses soit via mon profil, soit via la messagerie geocaching.com (Message Center), et je vous contacterai en cas de problème.
cross-stratification .
Hummocky cross-stratification (HCS) is a type of sedimentary structure found in sandstones. It is a form of cross-bedding usually formed by the action of large storms, such as hurricanes. It takes the form of a series of "smile"-like shapes, crosscutting each othe .
.
HCS exemple


You can see here: Oscillation ripple marks, hummocky cross stratification and storm beds indicate the shallow shelf was wave and storm dominated.


Questions:

REMINDER: NO BOX TO FIND ON SITE ...
TO VALIDATE THIS CACHE, ANSWER THE FOLLOWING QUESTIONS:
1) What means HCS ?.
2) Under the yellow cover, what is the size of the HCS and in your opinion its composition ?
3) Optional photo without revealing the HCS !!!:
Log this cache "Found it" and send me your proposals for answers either through my profile or via the messaging geocaching.com (Message Center), and I will contact you in case of problems.

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7 Logged Visits

Found it 6     Publish Listing 1     

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Coordinates are in the WGS84 datum

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