Growth patterns of stromatoporoids as possible indicators of broad palaeoenvironmental conditions
Čejchan, Petr; Galle, Arnošt; Hladil, Jindřich
2008 - English
Keywords:
růst; indikátory
Available in a digital repository NRGL
Growth patterns of stromatoporoids as possible indicators of broad palaeoenvironmental conditions
Diverse rock types from Jamaica : perspectives from petrography and whole-rock chemistry : initial report
Novák, Jiří Karel; Bosák, Pavel
2008 - English
Keywords:
manufactured sand; greywacke; calcarenite; Wagwater belt, Jamaica
Available at various institutes of the ASCR
Diverse rock types from Jamaica : perspectives from petrography and whole-rock chemistry : initial report
The principle of frozen evolution and its manifestation in the fossil record: the brachiopod genus Aegiromena Havlíček, 1961 (Upper Ordovician, Czech Republic)
Mikuláš, Radek
2008 - English
The presented study is in a good agreement with the idea of a frozen evolution of the genus Aegiromena, or, more precisely, it illustrates a gradual disappearance of the ability to respond to the environmental change by a selectively advantageous change in its morphology. After its freezing, further evolution of Aegiromena brings very little news; only subtle changes in the size of adults, subtle and variable changes in the width/length ratio, and a changing variability of muscular imprints can be noted. Sled paleopopulací ramenonožců rodu Aegiromena ve svrchním ordoviku Barrandienu vykazuje charakteristické prvky, které lze dobře objasnit aplikací koncepce tzv. zamrzlé evoluce. Počáteční rychlé změny morfologie vyvolané změnami substrátu dna v mělkém moři jsou vystřídány stabilitou morfologie a neschopností účelně reagovat na změny konzistence substrátu (objevují se už pouze drobné změny v konfiguraci svalových vtiskům nepatrné změny tvaru schránky a fluktuace velikosti jedinců); rod posléze vymírá ještě před nástupem drastických změn přírodního prostředí na hranici ordovik-silur.
Keywords:
frozen evolution; brachiopods; Ordovician
Available at various institutes of the ASCR
The principle of frozen evolution and its manifestation in the fossil record: the brachiopod genus Aegiromena Havlíček, 1961 (Upper Ordovician, Czech Republic)
The presented study is in a good agreement with the idea of a frozen evolution of the genus Aegiromena, or, more precisely, it illustrates a gradual disappearance of the ability to respond to the ...
Faunas and palaeoenvironments of the Late Palaeozoic : special publication to 5th Symposium on Permo-carboniferous Faunas and workshop Interpretation of Marine and Freshwater Environments in Carboniferous and Permian Deposits
Štamberg, S.; Zajíc, Jaroslav
2008 - English
The special volume contains the list of participants, the meeting programme, abstracts, and the excursion guide (Krkonoše Piedmont Basin and Boskovice Graben). Sborník obsahuje seznam účastníků, program sympozia, abstrakty a exkurzní průvodce (podkrkonošská pánev a boskovická brázda).
Keywords:
Late Palaeozoic; biota; palaeoenvironment
Available at various institutes of the ASCR
Faunas and palaeoenvironments of the Late Palaeozoic : special publication to 5th Symposium on Permo-carboniferous Faunas and workshop Interpretation of Marine and Freshwater Environments in Carboniferous and Permian Deposits
The special volume contains the list of participants, the meeting programme, abstracts, and the excursion guide (Krkonoše Piedmont Basin and Boskovice Graben)....
Workshop on Graptolite volume of Treatise on Invertebrate Paleontology and IPA Graptolite working group meeting : abstract book and Excursion guide
Štorch, Petr; Kraft, P.
2008 - English
Keywords:
invertebrate palentology; Treatise; graptolites
Available at various institutes of the ASCR
Workshop on Graptolite volume of Treatise on Invertebrate Paleontology and IPA Graptolite working group meeting : abstract book and Excursion guide
Volcanic and pyroclastic rocks from the Bito and Ramble area, Jamaica: Petrography and whole-rock chemistry : progress report no. 1
Novák, Jiří Karel; Pavková, Jaroslava; Bosák, Pavel
2008 - English
Keywords:
calc-alcaline volcanic rocks; spilitic tuffs hydroclastite; skidding resistance; pozzolanic activity; Jamaica
Available at various institutes of the ASCR
Volcanic and pyroclastic rocks from the Bito and Ramble area, Jamaica: Petrography and whole-rock chemistry : progress report no. 1
Feasibility of karst hydrogeological research in the Loferer Schacht area, Loferer Steinberge, Austria
Žák, Karel
2008 - English
The main purpose of this report is to make a feasibility study for a karst hydrogeological project in the Loferer Schacht cave and adjacent area, Loferer Steinberge, Austria. From a hydrogeological point of view, the known part of this cave system (vertical cave extent +9.8/-796.7 m, mapped length 7,800 m) occurs within the unsaturated (vadose) zone. Based on a pilot field survey, evaluation of the geological structure, and a preliminary study of groundwater residence time using oxygen stable isotopes it can be concluded that the area is not suitable for a detailed project. The most principal obstacles for such a study are: i. the character of the dis-charge sites located in talus accumulation, which do not allow precise measurement of the discharge; ii. the long storage of precipitation in the recharge area as perennial snowfields and ice plugs in swallow holes; and iii. the problematic use of artificial water tracers because the springs are used as drinking water.
Keywords:
Loferer Schacht; Loferer Steinberge; karst hydrogeology; Norther Calcareous Alps; oxygen isotopes
Available at various institutes of the ASCR
Feasibility of karst hydrogeological research in the Loferer Schacht area, Loferer Steinberge, Austria
The main purpose of this report is to make a feasibility study for a karst hydrogeological project in the Loferer Schacht cave and adjacent area, Loferer Steinberge, Austria. From a hydrogeological ...
Palaeomagnetic research of selected cave sediments in Korea : final report
Bosák, Pavel; Pruner, Petr; Woo, K. S.
2008 - English
Keywords:
caves; cave sediment; palaeomagnetism
Available at various institutes of the ASCR
Palaeomagnetic research of selected cave sediments in Korea : final report
High-grade limestones from the Santa Cruz Mts. : progress report 2 : pure calcarenite and calcirudite from the Santa Cruz Mts., Jamaica as raw cementitious materials
Novák, Jiří Karel; Bosák, Pavel; Pavková, Jaroslava
2008 - English
Keywords:
calcarenite; calcirudite; texture; white cement; Newport formation (Jamaica)
Available at various institutes of the ASCR
High-grade limestones from the Santa Cruz Mts. : progress report 2 : pure calcarenite and calcirudite from the Santa Cruz Mts., Jamaica as raw cementitious materials
Sign and arrival time determination of Acoustic emission signals by means of high-order statistic approach
Lokajíček, Tomáš; Klíma, Karel
2008 - English
Application of high order statistic to determine arrival time and sign of ultrasonic and acoustic emission signals. Využití vyšších statistických momentů pro stanovení času příchodu a znaménka prvního nasazení ultrazvukových signálů a signálů akustické emise.
Keywords:
high order statistic; signal sign determination; arrival time determination
Available at various institutes of the ASCR
Sign and arrival time determination of Acoustic emission signals by means of high-order statistic approach
Application of high order statistic to determine arrival time and sign of ultrasonic and acoustic emission signals....
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