{'fraction_non_alphanumeric': 0.024953789279112754, 'fraction_numerical': 0.0, 'mean_word_length': 6.172185430463577, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Reconstruction of the primary stratigraphy and correlation of the Precambrian metamorphic complexes in the Rhodope massif

The lithological analysis of the metamorphic rocks in the Rhodope massif, taking into consideration the lateral variability of their primary composition, polymetamorphic effects and tectonic deformations, demonstrates that prior to the metamorphism the upper Rhodopian Supergroup is composed of two complexes: lower volcano-sedimentary and upper calcareous ones. The lower complex after the metamorphism is composed of metaophiolites (serpentinites, amphibolites, metagabbroids) in the lower levels), mica schists, marbles, quartzites, jaspilites, called Variegated Formation. The upper complex is composed of marbles interlayered with schists. There are two types of Variegated Formation: à. Western Rhodopian (Satovcha) type with ophiolites prevailing in lower layers and b. Central Rhodopian (Lukovitsa) type with sedimentary rocks prevailing. A new correlation scheme of the lithostratigraphic units from Precambrian blocks in South Bulgaria is presented.