Znaczenie skamieniałości w metamorfiku mezozonalnym Gór Bystrzyckich i okolic Stronia Śląskiego
Abstract
ON SIGNIFICANCE OF FOSSILS FROM MESOZONAL METAMORPHIC ROCKS OF THE GÓRY BYSTRZYCKIE AND VICINITIES OF STRONIE ŚLĄSKIE
Summary
Primitive fossils with features of the Early Paleozoic ones were found in mesozonally alterated gneisses from Wyszki village in the Góry Bystrzyckle Mts, hitherto assigned to the Proterozoic. This locality is stratigraphically lower than that from which Upper Proterozoic flora was recorded (10). Faunal remains of the Early Paleozoic type were also found in mesozonally alterated series of quartzites in the metamorphic area at Goszów in the Góry Bialskie Mts (11). On the basis of these data M. Dumicz (7) presented the following interpretation of geological structure and history of the Kłodzko region:
(l) Sedimentation continued here from the Precambrian till Orkney phase without breaks,
(2) The Early Varisean structural stage is the oldest in the Kłodzko region.
The author presents evidence for lack of sedimentary continuity (the lack of the Eocambrian and Cambrian). There are also given data presented by other authors (3, 4, 14, 25, 29), evidencing that debris of rocks of the series in which the above mentioned fauna was found at Wyszki and Goszów, occurs in sedimentary rocks of the Eocambrian age in Lutetia, Ordovician age in the Góry Kaczawskie and southern Karkonosze Mts and finally in Early (and possibly Middle) Devonian age from vicinities of Strzelin. It follows that there is no evidence that the metamorphic complex of the Góry Bystrzyckle and Śnieżnickie Mts belongs to the same structural stage as the series containing debris of mesozonal rocks. The paper ends with a question given to paleontologists: whether or not this fauna may be interpreted as Proterozoic (as there are no genera on which the stratigraphy of the Paleozoic is based). Some genera of Paleozoic fauna could appear as early as the Proterozoic. According to the present author, the fauna from Wyszki and Goszów strongly enhance search for organic remains in strongly alterated rocks. These finds are, therefore, highly important from the point of view of paleontology but not stratigraphy nor knowledge of geological structure and history of the Kłodzko region.
Summary
Primitive fossils with features of the Early Paleozoic ones were found in mesozonally alterated gneisses from Wyszki village in the Góry Bystrzyckle Mts, hitherto assigned to the Proterozoic. This locality is stratigraphically lower than that from which Upper Proterozoic flora was recorded (10). Faunal remains of the Early Paleozoic type were also found in mesozonally alterated series of quartzites in the metamorphic area at Goszów in the Góry Bialskie Mts (11). On the basis of these data M. Dumicz (7) presented the following interpretation of geological structure and history of the Kłodzko region:
(l) Sedimentation continued here from the Precambrian till Orkney phase without breaks,
(2) The Early Varisean structural stage is the oldest in the Kłodzko region.
The author presents evidence for lack of sedimentary continuity (the lack of the Eocambrian and Cambrian). There are also given data presented by other authors (3, 4, 14, 25, 29), evidencing that debris of rocks of the series in which the above mentioned fauna was found at Wyszki and Goszów, occurs in sedimentary rocks of the Eocambrian age in Lutetia, Ordovician age in the Góry Kaczawskie and southern Karkonosze Mts and finally in Early (and possibly Middle) Devonian age from vicinities of Strzelin. It follows that there is no evidence that the metamorphic complex of the Góry Bystrzyckle and Śnieżnickie Mts belongs to the same structural stage as the series containing debris of mesozonal rocks. The paper ends with a question given to paleontologists: whether or not this fauna may be interpreted as Proterozoic (as there are no genera on which the stratigraphy of the Paleozoic is based). Some genera of Paleozoic fauna could appear as early as the Proterozoic. According to the present author, the fauna from Wyszki and Goszów strongly enhance search for organic remains in strongly alterated rocks. These finds are, therefore, highly important from the point of view of paleontology but not stratigraphy nor knowledge of geological structure and history of the Kłodzko region.