Wyniki wyszukiwania - BazTech

1

Bashkirian Rugosa (Anthozoa) from the Donets Basin (Ukraine). Part 7. The Family Neokoninckophyllidae Fomichev, 1953, with a preliminary revision of Moscovian taxa

Fedorowski Jerzy

Acta Geologica Polonica

|

2019

|

Vol. 69, no. 1

51--87

EN

The Family Neokoninckophyllidae and its type genus Neokoninckophyllum Fomichev, 1939 (type species: N. tanaicum Fomichev, 1939) are discussed and emended. In addition, the genera Orygmophyllum Fomichev, 1953 and Yuanophylloides Fomichev, 1953, originally included in the Families Campophyllidae Wedekind, 1922 and Lophophyllidae Grabau, 1928, respectively, are emended as well and transferred to the Neokoninckophyllidae. Two early Bashkirian species, viz. Yuanophylloides rectus (Vassilyuk in Aizenverg et al., 1983) and Y. inauditus (Moore and Jeffords, 1945), and the Moscovian Neokoninckophyllum sp. nov. are described on the basis of new collections from the Donets Basin. Neokoninckophyllum tanaicum, Yuanophylloides gorskyi Fomichev, 1953 (both Moscovian in age) and Y. cruciformis Fomichev, 1953 (latest Bashkirian), are redescribed on the basis of peels taken from Fomichev’s (1953) type specimens. Derivation of the Family Neokoninckophyllidae from the Subfamily Dibunophyllinae Wang, 1950 is postulated and phylogenetic links within the former are hinted at. The occurrence of Yuanophylloides inauditus in both the Donets Basin and the Western Interior Province of North America points to marine communication between those areas during the Bashkirian. The slightly earlier appearance of the oldest neokoninckophyllids in the Donets Basin, in comparison to North America (i.e., R1 vs R2 ammonoid biozones), documents the common roots and monophyletic development of the Neokoninckophyllidae in both areas.

2

Bashkirian Rugosa (Anthozoa) from the Donets Basin (Ukraine). Part 8. The Family Kumpanophyllidae Fomichev, 1953

Fedorowski Jerzy

Acta Geologica Polonica

|

2019

|

Vol. 69, no. 3

431--463

EN

The Family Kumpanophyllidae Fomichev, 1953, synonymised by Hill (1981) with the Family Aulophyllidae Dybowski, 1873, is emended and accepted as valid. The new concept of this family, based on both new collections and discussion on literature data, confirms the solitary growth form of its type genus Kumpanophyllum Fomichev, 1953. However, several fasciculate colonial taxa, so far assigned to various families, may belong to this family as well. The emended genus Kumpanophyllum forms a widely distributed taxon, present in Eastern and Western Europe and in Asia. Its Serpukhovian and Bashkirian occurrences in China vs Bashkirian occurrences in the Donets Basin and in Spain, may suggest its far-Asiatic origin, but none of the existing taxa can be suggested as ancestral for that genus. Thus, the suborder position of the Kumpanophyllidae remains unknown. Four new species: K. columellatum, K. decessum, K. levis, and K. praecox, three Kumpanophyllum species left in open nomenclature and one offsetting specimen, questionably assigned to the genus, are described.

3

Early Bashkirian Rugosa (Anthozoa) from the Donets Basin (Ukraine). Part 5. The Family Bothrophyllidae Fomichev, 1953

Fedorowski J.

Acta Geologica Polonica

|

2017

|

Vol. 67, no. 2

249--298

EN

Four genera (one new, one questionable), seven named species (five new) and five taxa left in open nomenclature are described from uppermost Serpukhovian (Limestone D53) to middle Bashkirian (Limestone G11) strata. A new genus: Nina and the new species: Bothrophyllum kalmyussi, B. gorbachevensis, Nina donetsiana, N. dibimitaria and N. magna are introduced. The genus Cystilophophyllum Fomichev, 1953 is redefined and transferred to the Family Bothrophyllidae. Three general topics discussed in the Considerations are: 1. The taxonomic value of the microstructure of the septa and the necessity for a distinction between that character and diagenetic alterations; 2. Depositional conditions, under which the rugose coral skeletons were deposited; 3. The similarity of skeletal constructions vs. relationships in some taxa of the Subfamily Dibunophyllinae Wang, 1950 and the Family Bothrophyllidae Fomichev, 1953. The lack of final conclusions in the matter of the relationships is due to the incompleteness and restricted number of specimens studied herein and the incomplete investigations of a great majority of the earlier described bothrophyllid taxa.

4

Diageneza a rozwój przestrzeni porowej w piaskowcach pensylwanu Pomorza Zachodniego

Kozłowska A.

Biuletyn Państwowego Instytutu Geologicznego

|

2008

|

nr 430

1-1

PL

Piaskowce pensylwanu są reprezentowane głównie przez arenity i waki kwarcowe. Głównymi składnikami cementu są: kwarc autigeniczny, autigeniczne minerały ilaste (kaolinit, dickit, illit), węglany (Mn-kalcyt, dolomit, ankeryt, syderyt) oraz hematyt i wodorotlenki żelaza. Powszechnie, lecz w niewielkiej ilości, występują siarczany (anhydryt, baryt). Miejscami obserwowano materię organiczną. W historii diagenezy piaskowców pensylwanu na Pomorzu Zachodnim wyróżniono eo- i mezodiagenezę. Szacuje się, że maksymalna temperatura jaka oddziaływała na te osady podczas diagenezy mogła przekraczać 140°C. Porowatość piaskowców waha się od 0 do ok. 20%. Dominuje porowatość pierwotna, natomiast porowatość wtórna stanowi niewielki procent. Głównymi procesami diagenetycznymi, które miały wpływ na właściwości petrofizyczne analizowanych skał, są kompakcja i cementacja. Kompakcja zredukowała porowatość pierwotną przeciętnie o ok. 37%, a cementacja o ok. 52%. Wśród osadów pensylwanu, najlepsze właściwości zbiornikowe wykazują piaskowce z trzech otworów wiertniczych: Dźwirzyno 3, Gorzysław 10 i Sarbinowo 1.

EN

The Pennsylvanian sandstones of Western Pomerania are represented chiefly by quartz arenites and wackes. The main cement components are authigenic quartz, authigenic clay minerals (kaolinite, dickite and illite), carbonates (Mn-calcite, dolomite, ankerite, siderite), hematite and Fe oxides. Sulphates (anhydrite and barite) are common, but occur in small amounts. Locally, organic matter is observed. Diagenetic history of the Pennsylvanian sandstones from Western Pomerania includes eo- and mesodiagenesis. The estimated maximum temperature that affected the rocks during diagenesis could exceed 140°C. Porosity of the sandstones varies from 0 to about 20%. Primary porosity is predominant, whereas secondary porosity accounts for a small percentage. The major diagenetic processes, affecting petrophysical properties of the rocks, were compaction and cementation. Compaction resulted in primary porosity reduction by 37%, cementation by approximately 52% on average. Among the Pennsylvanian deposits, the best reservoir properties are observed in sandstones from the Dźwirzyno 3, Gorzysław 10 and Sarbinowo 1 boreholes.