gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2026-17-2-0886WVTXRNgtcrust-2246Research ArticleСОВРЕМЕННАЯ ГЕОДИНАМИКАRECENT GEODYNAMICSИНТЕГРАЦИЯ ГРАВИМЕТРИЧЕСКИХ И ПОЛЕВЫХ ГЕОЛОГИЧЕСКИХ ИССЛЕДОВАНИЙ ДЛЯ ИЗУЧЕНИЯ ТЕКТОНИКИ И ГЕОДИНАМИКИ В ЦЕНТРАЛЬНОЙ ЧАСТИ ВНУТРИКОНТИНЕНТАЛЬНОЙ СКЛАДЧАТОЙ СИСТЕМЫ АТЛАС (ПРОВИНЦИЯ АЗИЛАЛ, МАРОККО)INTEGRATION OF GRAVIMETRIC AND FIELD GEOLOGICAL INVESTIGATIONS FOR STUDYING TECTONICS AND GEODYNAMICS IN THE CENTRAL PART OF THE ATLAS INTRACONTINENTAL FOLD SYSTEM (AZILAL PROVINCE, MOROCCO)https://orcid.org/0009-0001-5331-9694АссуссиС.AssoussiS.

BP 1014 RP, Рабат, пр-т Ибн Батута, 4

4 Ibn Batouta Ave, BP 1014 RP, Rabat 

souad_assoussi@um5.ac.mahttps://orcid.org/0000-0003-3305-4075СассиуиС.SassiouiS.

BP 5118, Рабат, пр-т Мухаммеда Бель Хассана Эль Уаззани 

Mohamed Bel Hassan El Ouazzani Ave, BP 5118, Rabat

https://orcid.org/0009-0007-2194-9193ОуджанБ.OujaneB.

BP 703, Рабат, пр-т Ибн Батута, 4 

Ibn Batouta Ave, BP 703, Rabat 10106

https://orcid.org/0009-0000-9012-6261СаадауиФ.SaadaouiF.

BP 1014 RP, Рабат, пр-т Ибн Батута, 4 

4 Ibn Batouta Ave, BP 1014 RP, Rabat

https://orcid.org/0000-0003-0930-2737ОусаидЛ.OusaidL.

BP 1014 RP, Рабат, пр-т Ибн Батута, 4 

Агадир 4500 

4 Ibn Batouta Ave, BP 1014 RP, Rabat

Agadir 4500 

https://orcid.org/0009-0007-9632-7719АафирЗ.AafirZ.

BP 1014 RP, Рабат, пр-т Ибн Батута, 4 

4 Ibn Batouta Ave, BP 1014 RP, Rabat 

https://orcid.org/0009-0001-8608-9100ХаддуХ. А.HaddouH. A.

BP 1014 RP, Рабат, пр-т Ибн Батута, 4 

4 Ibn Batouta Ave, BP 1014 RP, Rabat 

https://orcid.org/0009-0001-2604-4250МеззанА.MezzanA.

BP 1014 RP, Рабат, пр-т Ибн Батута, 4 

4 Ibn Batouta Ave, BP 1014 RP, Rabat 

https://orcid.org/0009-0003-1658-3204ХахуЮ.HahouY.

BP 1014 RP, Рабат, пр-т Ибн Батута, 4 

4 Ibn Batouta Ave, BP 1014 RP, Rabat 

Университет Мухаммеда VМароккоMohammed V UniversityMoroccoВысшая нормальная школа, Университет Мухаммеда VМароккоÉcole Normale Supérieure, Mohammed V UniversityMoroccoНаучно-исследовательский институт, Университет Мухаммеда VМароккоScientific Institute, Mohammed V UniversityMoroccoУниверситет Мухаммеда V ; Университет Ибн ЗохраМароккоMohammed V University ; Ibn Zohr UniversityMorocco202617042026172886886Copyright © Ассусси С., Сассиуи С., Оуджан Б., Саадауи Ф., Оусаид Л., Аафир З., Хадду Х.А., Меззан А., Хаху Ю., 20262026Ассусси С., Сассиуи С., Оуджан Б., Саадауи Ф., Оусаид Л., Аафир З., Хадду Х.А., Меззан А., Хаху Ю.Assoussi S., Sassioui S., Oujane B., Saadaoui F., Ousaid L., Aafir Z., Haddou H.A., Mezzan A., Hahou Y.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gt-crust.ru/jour/article/view/2246

Провинция Азилал в центральной части Высокого Атласа (Марокко) является настоящей природной лабораторией для изучения взаимодействия наследованных структур кристаллического фундамента с триасовыми эвапоритовыми деколлементами, что обеспечивает контроль тектонического строения при внутриплитном горообразовании. В данной работе объединены результаты картирования по гравиметрическим данным и полевых наблюдений для характеристики доминирующих структурных трендов и их значимости в масштабе земной коры. Проанализированы данные аномалий Буге по глобальной модели WGM2012, применена фильтрация по модулю горизонтального градиента (HGM), а также автоматическое выделение линеаментов с использованием метода матричного анализа, разработанного центром исследований в Университете Западной Австралии (CET). Полученная сеть линеаментов выявляет две главные системы разломов СВ-ЮЗ и СЗ-ЮВ простирания, с линеаментами В-З (подчиненного) и ВСВ-ЗЮЗ (господствующего) простирания. Решения деконволюции Эйлера группируются вдоль этих направлений и указывают на глубины источников в несколько километров, что подтверждает наличие характерного набора структурных особенностей в коровом масштабе. Полевые наблюдения (геометрия складок, ориентация разломов и кинематические индикаторы) согласуются с гравиметрической моделью и показывают проявление на дневной поверхности структур как СВ-ЮЗ, так и СЗ-ЮВ направления. В частности, главный сброс СВ простирания, затрагивающий тоарско-байосскую толщу, фиксирует устойчивость наследованных экстенсиональных разрывов, что повлияло на конфигурацию бассейна и последующую деформацию. Пространственная связь между закартированными диапирическими поясами и структурными трендами, выделенными по гравиметрическим данным, также указывает на то, что процессу мобилизации солей способствовали ранее существовавшие трещинные коридоры и образование эвапоритов. В целом, интеграция геофизических и геологических данных показывает, что унаследованность фундамента и эвапоритовые деколлементы в первую очередь контролируют стиль деформаций, сегментацию бассейнов и локализацию диапиризма в сегменте Азилал, уточняя региональные модели эволюции центральной части Высокого Атласа.

The Azilal Province in the Central High Atlas (Morocco) provides an excellent natural laboratory to investigate how inherited basement structures and Triassic evaporitic décollements interact to control tectonic architecture during intraplate mountain building. Here we integrate gravity-based structural mapping with field structural observations to characterize the dominant structural trends and their crustal significance. We analyze the Bouguer anomaly data from the WGM2012 global gravity model and apply the horizontal gradient magnitude filtration and automatic lineament extraction using the CET grid analysis. The resulting lineament network highlights two principal fault systems trending NE-SW and NW-SE, with subordinate E-W to ENE-WSW lineaments. Euler deconvolution solutions cluster along these trends and indicate source depths of several kilometers, supporting the interpretation of a crustal-scale structural grain. Field observations (fold geometries, fault orientations, and kinematic indicators) corroborate the gravity-derived framework and show that both NE-SW and NW-SE structural families are expressed at the surface. In particular, a major NE-striking normal fault affecting the Toarcian-Bajocian succession records the persistence of inherited extensional discontinuities that influenced basin configuration and subsequent deformation. The spatial association between mapped diapiric belts and gravity-derived structural trends further suggests that salt mobilization was guided by pre-existing fault corridors and facilitated by evaporitic detachments. Overall, the combined geophysical and geological datasets indicate that basement inheritance and evaporite-controlled decoupling exert a first-order control on deformation style, basin segmentation and diapir localization in the Azilal segment, refining regional models for the evolution of the Central High Atlas.

центральная часть Высокого Атласапровинция Азилалгравиметрические данныелинеаментный анализдеконволюция Эйлератектоническое строениеCentral High AtlasAzilal Provincegravity datalineament analysisEuler deconvolutiontectonic architectureReferencesAssoussi S., Hahou Y., Khalifa M., Saadaoui F., Oujane B., 2025a. Gravimetric Investigation and Analysis of Tectonic Features and Mineralization Zones in the Central High Atlas (Morocco). In: Abstracts of the General Assembly of the European Geoscience Union (April 27 – May 2, 2025, Vienna, Austria). EGU, EGU25-20105. https://doi.org/10.5194/egusphere-egu25-20105.Assoussi S., Hahou Y., Khalifa M., Saadaoui F., Oujane B., 2025a. Gravimetric Investigation and Analysis of Tectonic Features and Mineralization Zones in the Central High Atlas (Morocco). In: Abstracts of the General Assembly of the European Geoscience Union (April 27 – May 2, 2025, Vienna, Austria). 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The authors declare that there are no conflicts of interest present.