Стронциевая изотопная стратиграфия среднего и верхнего девона: данные по конодонтам из центральной части Волго-Уральской нефтегазоносной провинции

Представлены первые данные по изотопному составу стронция (87Sr/86Sr) для средне- и верхнедевонских отложений центральной части Волго-Уральской нефтегазоносной провин­ции, полученные на основе анализа рамиформных элементов конодонтовых аппаратов. Стратиграфическое положение боль­шинства образцов определено по содержащимся в них плат­форменным конодонтам. Значения 87Sr/86Sr демонстрируют хорошую согласованность с глобальной стронциевой кривой, что указывает на устойчивую связь исследуемого региона с Мировым океаном на протяжении среднего и позднего девона. Полученные данные подтверждают высокую степень стратигра­фической полноты регионального разреза, несмотря на много­численные перерывы осадконакопления и частое чередование доманиковых, терригенных и карбонатных отложений.

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