Paleontologie/ Paleontology Letovice - Sterky EarthCache

 Paleontologie

Paleontologie je veda o minulych geologickych dobach, predmetem jejiho studia jsou zkameneliny (fosilie). Studuje tedy vyvoj zivota v minulosti Zeme zejmena na zaklade dochovanych zbytku organismu v zemske kure.

Souradnice vas privedou do opusteneho opukoveho lomu.

Vapnity jilovec az slinovec vznikly v druhohorach (mezozoiku) obsahuje zbytky tel rostlin a zivocichu v podobe zkamenelin.

Muzete zde nalezt  mlze rodu Inoceramus pravdepodobne Inoceramus labiatus, ktery byl pomerne velky s hrubymi zebry a zil na piscitych a bahnitych dnech tehdejsiho more. Dalsimi castymi nalezy jsou schranky ramenonozcu (Cyclothyris) a jezovek (Micraster).

Z mista je pekny rozhled do udoli Kretinky s prehradou.

Dalsi naleziste zkamenelin na Letovicku - Boskovicku jsou:

Kladeruby a Kochov - lupkovy horizont a jilovite bridlice - kapradorosty:  N 49° 33.675', E 16° 36.506'

Zbonek - po tezbe uhelne slojky objeveno nejbohatsi naleziste prvohornich (permskych) svabu:  N 49° 31.230', E 16° 35.458'

Svitavka "Hradisko" - na vychozech permskych bridlic na vychodnim svahu kopce - rozmanite zkameneliny a pavoukovci:  N 49° 30.528', E 16° 36.106'

Bacov - "Na Skalkach" - permsti obojzivelni krytolebci (Discosaurisscus), ryby a rostliny (prirodni pamatka):  N 49° 31.62', E 16° 38.16'

Obora "U tramvaje" -permsky hmyz, obojzivelnici a rostliny:  N 49° 27.569', E 16° 36.129'

Obora "Maly Chlum" - dominantni kopec, opukovy a piskovcovy lom, mlzi a jezovky obdobne jako na teto lokalite:  N 49° 27.093', E 16° 35.291'

Podminky pro splneni logu.

Pro zapis platneho "cache found" logu nam poslete odpovedi na pet nasledujicich otazek a 1 fotografii. A to pres via e-mail (GC-profil)  a necekejte na schvaleni logu tj. muzete zalogovat "found" a poslat odpovedi. Provedeme nasledne kontrolu a pokud neco nebude v poradku, ozveme se...

1. Jake cislo ma hornina lomu na vychozich souradnicich v legende geologicke mapy 1:50 000 - odkaz v hintu.

2. Jakou velikost priblizne ma mlz Inoceramus labiatus.

3. Odhadnete mocnost vrstvy naleziste - vysku strane z fotografie.

4. V kameni steny se nachazeji rezavohneda loziska ruzne velikosti.  O co se muze jednat ?

Fotohint loziska

Dobrovolne - nepovinne ukoly.

5. Naleznete dobrovolne v lomu zkamenelinu a vyfotte ji s vasim prstem. - fotoukazka.

6. K logu dobrovolne prilozte vasi fotografii od 2 javoru babyk (polnich) u steny  - fotoukazka

Inoceramus labiatus

osoba

Vice informaci muzete nalezt:

http://www.pecten.cz/paleo.htm

http://www.geology.cz/ - Hint pro otazku c 1.  - V legende mapy 1: 50 000.

Poznámky: Zkameneliny fotografujte radeji bez blesku (nici plasticnost).

Paleontology

Paleontology is the study of past geological periods whom subject is study of fossils.
It includes studying the evolution of life in the past, notably on the basis of preserved remains of organisms in the earth’s crust.

The coordinates will take you to an abandoned marl quarry.

The calcareous claystone (originated in the Mesozoic) contains remains of plants and animals in the form of fossils. There you may find a clam Inoceramus labiatus which was relatively large having rough ribs and lived in sandy and muddy bottoms of the past sea. Other common findings are brachiopod shells (Cyclothyris) and sea urchins (Micraster). 

There is a nice view into the valley with a dam Kretinka.

Other fossils sites in region of Letovice and Boskovice are:

Kladeruby a Kochov - horizon and shale - ferns:  N 49° 33.675', E 16° 36.506'

Zbonek - the richest deposits of Paleozoic (Permian) cockroaches were discovered after mining the coal seam:  N 49° 31.230', E 16° 35.458'

Svitavka "Hradisko" - Permian shale outcrops on the eastern slope of the hill - a variety of fossils and arachnids:  N 49° 30.528', E 16° 36.106'

Bacov - "Na Skalkach"/ "On the rocks" - amphibious Permian ichthyosteigids (Discosaurisscus), fish and plants (a natural monument):  N 49° 31.62', E 16° 38.16'

Obora "U tramvaje"/"By the Tram" - Permian insects, ichthyosteigids a plants:  N 49° 27.569', E 16° 36.129'

Obora "Maly Chlum" - a dominant hill, marl and sandstone quarry, clams and urchins similarly as in this location:  N 49° 27.093', E 16° 35.291'

Conditions for completing the log:

To write valid “cache found” log send us the answer to the following five questions and a photo. Please do it via e-mail (GC-profile) and do not expect the log to be approved immidiately. It means that you can log in “found” and send your answers. Afterwards, we will check your work. If something is not completed or valid we will contact you.

Here are the questions:

1. What number has the rock quarry on the default coordinates in the legend geological maps 1:50 000? The reference could be found in the hint.

2. What is an approximate size of  Inoceramus labiatus.

3. Can you guess a layer thickness of the site (the height of the slopes in the photograph)?

4. The stone walls have rusty red bearings of different sizes. What it could be?

Fotohint rusty red bearings

Optional task

5.  Find voluntarily a fossil in a quarry and take a photo of it (with your pointing finger.( fotohint - Inoceramus labiatus)

6.  Enclose voluntarily your photo with two Acer campetre beside a wall.( fotohint - person)

Inoceramus labiatus

person

For further info, try out these pages:

http://www.pecten.cz/paleo.htm

http://www.geology.cz/ - Hint for Question 1. – in the map legend  1: 50 000.

Note: It is recommended not to use flashlight during taking your photos, it may damage its plasticity.