СРАВНЕНИЕ МОДЕЛИ КОСОГО РИФТИНГА И ДЕФОРМАЦИЙ ТРАНСФЕРНОЙ ЗОНЫ, РАСПОЛОЖЕННОЙ В СЕВЕРНОМ СЕГМЕНТЕ РИФТА ФЕН-ВЕЙ: ПОСЛЕДСТВИЯ РОЯ ЗЕМЛЕТРЯСЕНИЙ 1989 ГОДА В РАЙОНЕ ДАТУН- ЯНГГАО (КИТАЙ)

Эволюция рифта Фен-Вей происходит под влиянием косого рифтинга, как показывают тектонофизические эксперименты. В данном исследовании основная особенность модели состоит в том, что западные и восточные границы трансферной зоны между соседними впадинами СВВ простирания, образовавшимися вследствие растяжения, имеют тенденцию к образованию правосторонних сдвигов с незначительной сбросовой компонентой как результат взаимодействия между указанными впадинами под влиянием косого рифтинга. Современная деформация рифта Фен-Вей может быть установлена путем проверки характеристики, предсказанной экспериментально. Нами были проанализированы решения по смещениям и механизмам очага землетрясения М=6.1 1989 года в районе Датун-Янггао – сильнейшего землетрясения в рифте Фен-Вей за последние 200 лет. Анализ показал, что трансферная зона между бассейнами Яньюань и Хуньюань ограничена сдвигами ССВ простирания с незначительной сбросовой компонентой на восточной и западной окраинах данной зоны. Установленное в нашем исследовании соответствие между изученной моделью и современной тектонической активностью в изучаемом районе подтверждает, что косой рифтинг по-прежнему играет важную роль в современных деформациях северной части рифта Фен-Вей.

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