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Геодинамика и тектонофизика

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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)

https://doi.org/10.5800/GT-2019-10-1-0403

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Аннотация

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.

 

Об авторах

Ян-Цюнь Чжо
Государственная лаборатория динамики землетрясений, Институт геологии, Администрация по землетрясениям Китая
Китай

Ян-Цюнь Чжо - PhD

No. 1, Hua Yan Li, Chaoyang District, Beijing 100029



Яншуан Го
Государственная лаборатория динамики землетрясений, Институт геологии, Администрация по землетрясениям Китая
Китай

Яншуан Го A- ssistant Professor

No. 1, Hua Yan Li, Chaoyang District, Beijing 100029



С. А. Борняков
Институт земной коры СО РАН
Россия

Сергей Александрович Борняков - кандидат геолого-минералогических наук, старший научный сотрудник

664033, Иркутск, ул. Лермонтова, 128



Цзинь Ма
Государственная лаборатория динамики землетрясений, Институт геологии, Администрация по землетрясениям Китая
Китай

Цзинь Ма - академик

No. 1, Hua Yan Li, Chaoyang District, Beijing 100029



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Для цитирования:


Чжо Я., Го Я., Борняков С.А., Ма Ц. 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). Геодинамика и тектонофизика. 2019;10(1):43-51. https://doi.org/10.5800/GT-2019-10-1-0403

For citation:


Zhuo Y., Guo Y., Bornyakov S.A., Ma J. A TEST OF THE OBLIQUE-RIFTING MODEL FOR TRANSFER ZONE DEFORMATION IN THE NORTHERN FEN-WEI RIFT: IMPLICATIONS FROM THE 1989 M 6.1 DATONG-YANGGAO EARTHQUAKE SWARM. Geodynamics & Tectonophysics. 2019;10(1):43-51. https://doi.org/10.5800/GT-2019-10-1-0403

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