Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia

Ajebush Wuletaw; Bishaw Mihret

doi:doi:10.11648/j.earth.20241304.11

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Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia

Ajebush Wuletaw^*

, Bishaw Mihret

Published in Earth Sciences (Volume 13, Issue 4)

Received: 4 May 2024 Accepted: 20 May 2024 Published: 4 July 2024

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Abstract

The Mesozoic sedimentary basins in Ethiopia, particularly the Central Ethiopia, and Blue Nile Basin within the central main Ethiopian rift region are characterized by a diverse range of volcano-sedimentary rocks dominated by sedimentary sequences. The lithostratigraphy and petrology of Mesozoic sedimentary rocks of Lemi area, North Shewa, in Central Ethiopia within the Blue Nile basin, is described based on detailed field observations, lithostratigraphic analysis, petrographic examinations. The lithological units identified during fieldwork include Mudstone, Sandstone, and Basaltic rock formations. The sandstone unit in the study covers an estimated average thickness is 237 meters with intercalations of thinly bedded mudstone. The average thickness of each sandstone units (coarse (23 meters), medium (90 meters) and fine-grained (115 meters) sandstone unit) are varying from place to place within the study area. The stratigraphic section logs in four each block (Geza Washa, Dalota, Ruka, and Gosh Wiha) shows coarsening upward indicating the depositional environment transition from deep marine to the fluvial environment. The results of the study reveal the geological history and paleoenvironmental conditions of the Mesozoic sedimentary rocks in the Lemi area. This study contributes to our understanding of the geological processes that have influenced the formation of the Lemi area and provides valuable interpretations of regional geology.

Published in	Earth Sciences (Volume 13, Issue 4)
DOI	10.11648/j.earth.20241304.11
Page(s)	116-126
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Lemi, Lithostratigraphy, Mesozoic, Petrography, Sedimentary Rocks

References

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APA Style

Wuletaw, A., Mihret, B. (2024). Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia. Earth Sciences, 13(4), 116-126. https://doi.org/10.11648/j.earth.20241304.11

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ACS Style

Wuletaw, A.; Mihret, B. Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia. Earth Sci. 2024, 13(4), 116-126. doi: 10.11648/j.earth.20241304.11

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AMA Style

Wuletaw A, Mihret B. Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia. Earth Sci. 2024;13(4):116-126. doi: 10.11648/j.earth.20241304.11

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@article{10.11648/j.earth.20241304.11,
  author = {Ajebush Wuletaw and Bishaw Mihret},
  title = {Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia
},
  journal = {Earth Sciences},
  volume = {13},
  number = {4},
  pages = {116-126},
  doi = {10.11648/j.earth.20241304.11},
  url = {https://doi.org/10.11648/j.earth.20241304.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20241304.11},
  abstract = {The Mesozoic sedimentary basins in Ethiopia, particularly the Central Ethiopia, and Blue Nile Basin within the central main Ethiopian rift region are characterized by a diverse range of volcano-sedimentary rocks dominated by sedimentary sequences. The lithostratigraphy and petrology of Mesozoic sedimentary rocks of Lemi area, North Shewa, in Central Ethiopia within the Blue Nile basin, is described based on detailed field observations, lithostratigraphic analysis, petrographic examinations. The lithological units identified during fieldwork include Mudstone, Sandstone, and Basaltic rock formations. The sandstone unit in the study covers an estimated average thickness is 237 meters with intercalations of thinly bedded mudstone. The average thickness of each sandstone units (coarse (23 meters), medium (90 meters) and fine-grained (115 meters) sandstone unit) are varying from place to place within the study area. The stratigraphic section logs in four each block (Geza Washa, Dalota, Ruka, and Gosh Wiha) shows coarsening upward indicating the depositional environment transition from deep marine to the fluvial environment. The results of the study reveal the geological history and paleoenvironmental conditions of the Mesozoic sedimentary rocks in the Lemi area. This study contributes to our understanding of the geological processes that have influenced the formation of the Lemi area and provides valuable interpretations of regional geology.
},
 year = {2024}
}

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TY  - JOUR
T1  - Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia

AU  - Ajebush Wuletaw
AU  - Bishaw Mihret
Y1  - 2024/07/04
PY  - 2024
N1  - https://doi.org/10.11648/j.earth.20241304.11
DO  - 10.11648/j.earth.20241304.11
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 116
EP  - 126
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20241304.11
AB  - The Mesozoic sedimentary basins in Ethiopia, particularly the Central Ethiopia, and Blue Nile Basin within the central main Ethiopian rift region are characterized by a diverse range of volcano-sedimentary rocks dominated by sedimentary sequences. The lithostratigraphy and petrology of Mesozoic sedimentary rocks of Lemi area, North Shewa, in Central Ethiopia within the Blue Nile basin, is described based on detailed field observations, lithostratigraphic analysis, petrographic examinations. The lithological units identified during fieldwork include Mudstone, Sandstone, and Basaltic rock formations. The sandstone unit in the study covers an estimated average thickness is 237 meters with intercalations of thinly bedded mudstone. The average thickness of each sandstone units (coarse (23 meters), medium (90 meters) and fine-grained (115 meters) sandstone unit) are varying from place to place within the study area. The stratigraphic section logs in four each block (Geza Washa, Dalota, Ruka, and Gosh Wiha) shows coarsening upward indicating the depositional environment transition from deep marine to the fluvial environment. The results of the study reveal the geological history and paleoenvironmental conditions of the Mesozoic sedimentary rocks in the Lemi area. This study contributes to our understanding of the geological processes that have influenced the formation of the Lemi area and provides valuable interpretations of regional geology.

VL  - 13
IS  - 4
ER  -

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Author Information

Ajebush Wuletaw

Department of Geology, Debre Markos University, Debre Markos, Ethiopia

Contact Email

http://orcid.org/0009-0006-6604-6273
Bishaw Mihret

Department of Geology, Mekdela Amba University, Tulu Awuliya, Ethiopia

Contact Email

http://orcid.org/0009-0009-0069-8625

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APA Style

Wuletaw, A., Mihret, B. (2024). Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia. Earth Sciences, 13(4), 116-126. https://doi.org/10.11648/j.earth.20241304.11

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ACS Style

Wuletaw, A.; Mihret, B. Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia. Earth Sci. 2024, 13(4), 116-126. doi: 10.11648/j.earth.20241304.11

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AMA Style

Wuletaw A, Mihret B. Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia. Earth Sci. 2024;13(4):116-126. doi: 10.11648/j.earth.20241304.11

Copy | Download

@article{10.11648/j.earth.20241304.11,
  author = {Ajebush Wuletaw and Bishaw Mihret},
  title = {Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia
},
  journal = {Earth Sciences},
  volume = {13},
  number = {4},
  pages = {116-126},
  doi = {10.11648/j.earth.20241304.11},
  url = {https://doi.org/10.11648/j.earth.20241304.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20241304.11},
  abstract = {The Mesozoic sedimentary basins in Ethiopia, particularly the Central Ethiopia, and Blue Nile Basin within the central main Ethiopian rift region are characterized by a diverse range of volcano-sedimentary rocks dominated by sedimentary sequences. The lithostratigraphy and petrology of Mesozoic sedimentary rocks of Lemi area, North Shewa, in Central Ethiopia within the Blue Nile basin, is described based on detailed field observations, lithostratigraphic analysis, petrographic examinations. The lithological units identified during fieldwork include Mudstone, Sandstone, and Basaltic rock formations. The sandstone unit in the study covers an estimated average thickness is 237 meters with intercalations of thinly bedded mudstone. The average thickness of each sandstone units (coarse (23 meters), medium (90 meters) and fine-grained (115 meters) sandstone unit) are varying from place to place within the study area. The stratigraphic section logs in four each block (Geza Washa, Dalota, Ruka, and Gosh Wiha) shows coarsening upward indicating the depositional environment transition from deep marine to the fluvial environment. The results of the study reveal the geological history and paleoenvironmental conditions of the Mesozoic sedimentary rocks in the Lemi area. This study contributes to our understanding of the geological processes that have influenced the formation of the Lemi area and provides valuable interpretations of regional geology.
},
 year = {2024}
}

Copy | Download

TY  - JOUR
T1  - Lithostratigraphy and Petrography of Mesozoic Sedimentary Rocks of Lemi Area, North Shewa, Central Ethiopia

AU  - Ajebush Wuletaw
AU  - Bishaw Mihret
Y1  - 2024/07/04
PY  - 2024
N1  - https://doi.org/10.11648/j.earth.20241304.11
DO  - 10.11648/j.earth.20241304.11
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 116
EP  - 126
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20241304.11
AB  - The Mesozoic sedimentary basins in Ethiopia, particularly the Central Ethiopia, and Blue Nile Basin within the central main Ethiopian rift region are characterized by a diverse range of volcano-sedimentary rocks dominated by sedimentary sequences. The lithostratigraphy and petrology of Mesozoic sedimentary rocks of Lemi area, North Shewa, in Central Ethiopia within the Blue Nile basin, is described based on detailed field observations, lithostratigraphic analysis, petrographic examinations. The lithological units identified during fieldwork include Mudstone, Sandstone, and Basaltic rock formations. The sandstone unit in the study covers an estimated average thickness is 237 meters with intercalations of thinly bedded mudstone. The average thickness of each sandstone units (coarse (23 meters), medium (90 meters) and fine-grained (115 meters) sandstone unit) are varying from place to place within the study area. The stratigraphic section logs in four each block (Geza Washa, Dalota, Ruka, and Gosh Wiha) shows coarsening upward indicating the depositional environment transition from deep marine to the fluvial environment. The results of the study reveal the geological history and paleoenvironmental conditions of the Mesozoic sedimentary rocks in the Lemi area. This study contributes to our understanding of the geological processes that have influenced the formation of the Lemi area and provides valuable interpretations of regional geology.

VL  - 13
IS  - 4
ER  -

Copy | Download