The first report of cryptospore assemblages of Late Ordovician in Iran, Ghelli Formation, Eastern Alborz

Document Type: Research Paper

Authors

1 Geoscience Research Center, Geological survey of Iran, Tehran, Iran

2 Ferdowsi University of Mashhad International Campus

3 Enviromental and Paleomagnetic Laboratory, Geological survey of Iran, Tehran

Abstract

For the first time, an assemblage of cryptospores, which includes 10 species belonging to nine genera, from the Upper Ordovician
strata, is being reported, in Iran. These cryptospore assemblages were recovered from the upper part of Ghelli Formation., from the
eastern Alborz Mountain range. These peri-Gondwanan cryptospores have been classified based on their morphology (monad, true
dyad, pseudodyad, true attached, and loose tetrads). The results of the present study support previous findings that there are no
significant differences between similar-aged cryptospore assemblages of the peri-Gondwanan, Baltic provinces and other parts of the
world. Based on the presence of the chitinozoan index of the northern Gondwana (Spinachitina oulebsiri), the index acritarchs, and the
present cryptospores, a late Hirnantian (Late Ordovician) age is proposed to the top of the Ghelli Formation. The cryptospores seem to
be transported from an adjacent land area and the lack of land-derived elements in the up-section may indicate an increased distance
offshore.

Keywords


Article Title [Persian]

اولین گزارش مجموعه کریپتواسپورهای اُردویسین پسین ایران از سازند قِلّی، البرز شرقی

Authors [Persian]

  • مریم محمودی 1
  • جعفر صبوری 2
  • حبیب علیمحمدیان 3
  • محمودرضا مجیدی فرد 1
1 پژوهشکده علوم زمین، سازمان زمین شنای و اکتشافات معدنی کشو، تهران، ایران
2 دانشگاه فردوسی مشهد، پردیس بین الملل
3 آزمایشگاه محیط و دیرینه مغناطیس، سازمان زمین شناسی و اکتشافات معدنی، تهران، ایران
Abstract [Persian]

در این مطالعه برای نخستین‌بار در ایران، یک مجموعه کریپتواسپوری مشتمل بر 9 جنس و 11 گونه از طبقات اردویسین بالایی شناسایی و رده‌بندی شد. این مجموعه کریپتواسپوری از رأس سازند غیر رسمی اَبَرسَج (هم ارز سازند رسمی قِلّی) از رشته کوه‌های البرز شرقی به دست آمد. کریپتواسپور‌های پیرامون گندوانایی از نظر ریختاری (موناد، دیاد واقعی، دیاد دروغین، تتراد‌های متصل و سست) رده‌بندی شدند. نتایج مطالعه حاضر مؤید این نظریه در مطالعات قبلی می‌باشد که هیچ تفاوت اساسی بین مجموعه کریپتواسپوری پیرامون حوزه‌های گندوانایی، بالتیک و سایر نقاط جهان به صورت هم زمان، وجود نداشته است. حضور کیتینوزوآی شاخص گندوانای شمالی هم‌چون Spinachituna oulebsiri، اکریتارک‌های شاخص و کریپتواسپور‌های شناسایی شده توسط ما، برای رأس سازند اَبَرسَج، سن هیرنانتین پسین (اردویسین پسین) را پیشنهاد می‌کند.

Keywords [Persian]

  • کریپتواسپور
  • اردویسین پسین
  • سازند قِلّی
  • البرزشرقی
  • ایران
Alavi, M., 1979. The virani ophiolite and surrounding rocks. Gol. Rundsch. 68 (1): 334-341.
Alavi, M., 1991. Sedimentary and structural characteristics of the Paleo-Tethys remnants in northeastrern Iran. American
Association of Petroleum Geologists Bulletin. 103 (8): 938-992.
Balme, B.E., 1988. Miospores from Late Devonian (Early Frasnian) strata, Carnarvon Basin, Western Australia.
Paläeontographica, Abteilung B. 209 (4): 109–166.
Beck, J.H., Strother, P.K., 2008. Miospores and cryptospores from the Silurian section at Allenport, Pennsylvania, USA.
The first report of cryptospore assemblages of Late Ordovician in Iran, Ghelli… 135
Journal of Palaeontology. 82: 857–883.
Breuer, P., Al-Ghazi, A., Al-Ruwaili, M., Higgs, K.T., Steemans, P., Wellman, C.H., 2007. Early to Middle Devonian
miospores from northern Saudi Arabia Miospores. Revue de micropaleontology. 50: 27–57.
Burgess, N.D., 1991. Silurian cryptospores and miospores from the type Llandovery area, southwest Wales.
Palaeontology. 34 (3): 575- 599.
Burgess, N.D., Richardson, J.B., 1991. Silurian cryptospores and miospores from the type Wenlock area, Shropshire
England. Palaeontology. 34 (3): 601– 628.
Burgess, N.D., Richardson, J.B., 1995. Late Wenlock to early Pridoli cryptospores and miospores from south and
southwest Wales, Great Britain. Palaeontographica Abteilung. B, 236 (1/3): 1- 44.
Chateauneuf J.J., Jenny J., Stampfli G., 1978. L’Ordovician de l’Elbourz oriental. Stratigraphie et palynologie. Note du
laboratoire de Paleontologie de I’uriuersite de Geneveg, 2 (1-13): 55-61.
Delabroye, A., Vecoli, M., Hints, O., Servais, T., 2010. Acritarchs from the Ordovician–Silurian boundary beds of the
Valga-10 drill core, southern Estonia (Baltica), and their stratigraphic and palaeobiogeographic implications. 35 (1): 4-
45.
Foster, C.B., Williams, G.E., 1991. Late Ordovician–Early Silurian age for the Mallowa Salt of the Carribuddy Group,
Canning Basin, Western Australia, based on occurrences of Tetrahedraletes medinensis Strother and Traverse 1979.
Australian Journal of Earh Sciences. 38: 223–228.
Ghavidel-Syooki, M., Khosravi, M. B., 1994. The study of lower Paleozoic sediment in Tang-e-Zakin, Kuh-e-Faraghan
and introducing Seyahou and Sarchahan Formations in Zagros basin. Quaterly Geoscieince Jornal. 4 (14): 202-210.
Ghavidel-Syooki, M., 1995. The Sarchahan Formation, Quaterly Geosience Jornal. 4 (15-16): 74-89.
Ghavidel-syooki, M., 2006. Chitinozoan Biostratigraphy and Palaeogeography of Silurian Strata (Niur Formation) at
Eastern Alborz Range (Kopet-Dagh Region) Northeastern Iran. JUST. 32 (3): 127-146.
Ghavidel-Syooki, M., Hosseinzadeh Moghadam, M., 2010. Palynostratigraphy of early Paleozoic sediments in south of
Fazel abad area, Kholin Darreh (South east of Gorgan), Stratigraphy and Sedimentology researches. 26 (38): 1-24, (in
Persian).
Ghavidel-Syooki, M., Hassanzadeh, J., Vecoli, M., 2011a. Palynology and isotope geochronology of the Upper
Ordovician–Silurian successions (Ghelli and Soltan Maidan Formations) in the Khoshyeilagh area, eastern Alborz
Range, northern Iran; stratigraphic and palaeogeographic implications. Review of Palaeobotany and Palynology. 164 (3-
4): 251–271.
Ghavidel-syooki, M., Álvaro J., Popov, L., Ghobadi Pour, M.,Ehsani, M. H., Suyarkova, A., 2011b. Stratigraphic
evidence for the Hirnantian (latest Ordovician) glaciation in the Zagros Mountains, Iran. Palaeogeography,
Palaeoclimatology, Palaeoecology. 307 (1-4): 1–16.
Gray, J., 1988. Land plant spores and the Ordovician–Silurian boundary. Bulletin of the British Museum of Natural
History (Geology). 43: 351–358.
Gray, J., Massa, D., Boucot, A.J., 1982. Caradocian land plant microfossils from Libya. Geology. 10: 197–201.
Gray J., Theron J.H., Boucot A.J., 1986. Age of the Cedarberg Formation, South Africa and early land plant evolution.
Geological Magazine. 123 (4): 445–454.
Johnson, N.G., 1985. Early Silurian palynomorphs from the Tuscarora Formation in Central Pennsylvanian and their
paleobotanical and geological significance. Review of Palaeobotany and Palynology. 45: 307–360.
Le Herisse, A, Paris, F, Steemans, P., 2013. Late Ordovician-earliest Silurian palynomorphs from northern Chad and
correlation with contemporaneous deposits of southeastern Libya. Bulletin of Geosciences. 88 (3): 483-504.
Mahmoudi M., Alimohammadian H., Sabouri J., Majidifard M. R., 2011. The investigation of magnetical and biological
palaeogeography of Abarsaj fm., (Gelli Fm.) and Soltan Meydan in north east of Shahroud. 30th Geological Survey of
Iran, Tehran, Iran (in Persian).
Mahmoudi M., 2011. Investigation of palaeomagnetogeography of volcanic beds of Abarsaj fm. (Ghelli Fm.) and Soltan
Meydan Formations and palynological study of in encompassing strata of them at northeast of Shahroud city, Iran.
Research institute of geosciences, Geological Survey of Iran, (Un published M Sc. Thesis, in Persian); 350p.
Miller, M.A., Eames L.E., 1982. Palynomorphs from the Silurian Medina Group (Lower Llandovery) of the Niagara
Gorge, Lewiston, New York, USA. Palynology. 6: 221–254.
Miller, M. A., Al-Ruwaili, M. H., 2007. Preliminary palynological investigation of Saudi Arabian Upper Ordovician
glacial sediments. Revue de Micropaléontologie. 50 (1): 17-26.
Mizusaki, A.M., Melo, J.H.G., Lelarge M.L., Steemans P., 2002. Vila Maria Formation, Paranà Basin, Brazil— an
example of integrated geochronological and palynological datings. Geological Magazine. 139: 453–463.
Molyneux, S.G., Barron, H.F., Smith R.A., 2008. Upper Llandovery–Wenlock (Silurian) palynology of the Pentland Hills
inliers, Midland Valley of Scotland. Scottish Journal of Geology. 44: 151–168.
Paris, F., 1990. The Ordovician biozones of the North Gondwana domain. Review of Paleobotany and Palynology. 66 (3-
4): 181–209.
136 Mahmoudi et al. Geopersia, 4(2), 2014
Paris F., Bourahrouh A., Le Herissé, A., 2000. The effects of the final stages of the Late Ordovician glaciation on marine
palynomorphs (chitinozoans, acritarchs, leiospheres) in well Nl-2 (NE Algerian Sahara). Review of Palaeobotany and
Palynology. 113: 87–104.
Richardson, J.B., 1988. Late Ordovician and Early Silurian cryptospores and miospores from northeast Libya. In: El-
Arnauti, A., Owens, B., Thusu, B. (Eds.), Subsurface Palynostratigraphy of Northeast Libya. Garyounis University
Press, Benghazi. 89–109 pp.
Richardson, J.B., 1996. Chapter 18A, Lower and Middle Palaeozoic records of terrestrial palynomorphs. In: Jansonius, J.,
and McGregor, D.C. (Eds.), Palynology: Principles and Applications. American Association of Stratigraphic
Palynologists Foundation, Houston. 555–574 pp.
Richardson, J. B., Ford, J. H., Parker, F., 1984. Miospores, correlation and age of some Scottish Lower Old Red
Sandstone sediments from the Strathmore region (Fife and Angus). Journal of Micropalaeontology. 3: 109-124.
Rubinstein, C.V., 2005. Ordovician to Lower Silurian palynomorphs from the Sierras subandinas (Subandean ranges),
northwestern Argentina: a preliminary report. In: Steemans, P., Javaux, E. (Eds.), Pre-Cambrian to Palaeozoic
Palaeopalynology and Palaeobotany- Carnets de Géologie / Notebooks on Geology, Brest, Memoir.
Rubinstein, C.V., Vaccari, N.E., 2004. Cryptospores assemblages from the Ordovician/ Silurian boundary in the Puna
Region, NW Argentina. Palaeontology. 47: 1037–1061.
Rubinstein, C.V., Gerrienne, P., De la Puente, G.S., Astini, R.A., Steemans P., 2010. Early-Middle Ordovician evidence
for land plants in Argentina (eastern Gondwana). The New Phytologist. 188: 365–369.
Rubinstein, C.V., Vecoli, M., Astini, R.A., 2011. Biostratigraphy and palaeoenvironmental characterization of the Middle
Ordovician from the Sierras Subandinas (NW Argentina) based on organic-walled microfossils and sequence
stratigraphy. Journal of South American Earth Sciences. 31: 124–138.
Sabouri, J., 2003. Palynostratigraphy and Palaeogeography of Ordovician in north of Iran, 22thGeoscience conference,
Geological Survey of Iran, Tehran, Iran, Abstract book, 147-148 pp. (in Persian).
Shahrabi, M., 1990. 1:250000 scale geological map of Gorgan Geological Survey of Iran-Tehran, Iran (in Persian).
Steemans, P., 2000. Miospore evolution from the Ordovician to Silurian. Review of Palaeobotany and Palynology. 113 (1-
3): 189-196.
Steemans, P., 2001. Ordovician cryptospores from the Oostduinkerke borehole, Brabant Massif, Belgium. Geobios. 34
(1): 3–12.
Steemans, P., Le Hèrisse, A., Bozdogan, N. 1996. Ordovician and Silurian cryptospores and miospores from southeatern
Turkey. Review of Palaeobotany and Palynology. 93 (1-4): pp. 35–76.
Steemans, P., Higgs, K.T., Wellman, C.H., 2000. Cryptospores and trilete spores from the Llandovery, Nuayyim-2
Borehole, Saudi Arabia. In: Al-Hajri, S., Owens, B. (Eds.), Stratigraphic Palynology of the Palaeozoic of Saudi Arabia.
GeoArabia, Bahrain, Special. 1: 92–115.
Steemans, P., Wellman C.H., Filatoff J., 2007. Palaeophytogeographical and palaeoecological implications of a miospore
assemblage of earliest Devonian (Lochkovian) age from Saudi Arabia. Palaeogeography, Palaeoclimatology,
Palaeoecology. 250 (1-4): 237–254.
Steemans, P., Le Hérissé, A., Melvin, J., Miller, M., Paris, F., Verniers, J., Wellman, C. H., 2009. Origin and Radiation of
the Earliest Vascular Land Plants. Scienc. 324 (5925): 353- 353.
Stocklin, J., 1968. Structural history and tectonics of Iran, A Review Bulletin American Association of Petroleum
Geologists. 52 (7): 1229-1258.
Strother, P.K., 1991. A classification scheme for the cryptospores. Palynology. 15: 219- 236.
Strother, P.K., 1996. Acritarchs. In: Jansonius J., McGregor D.C., (eds.), Palynology: Principles and Applications.
Principles. American Association of Stratigraphic Palynologists Foundation, Dallas. 1: 81-106.
Strother, P.K., Al-Hajri, S.A., Traverse A., 1996. New evidence for land plants from the lower Middle Ordovician of
Saudi Arabia. Geology. 24 (1): 55- 58.
Taylor, W.A., 2002. Studies in cryptospore ultrastructure: variability in the tetrad genus Tetrahedraletes and type material
of the dyad Dyadospora murusattenuata. Review of Palaeobotany and Palynology. 119 (1-2): 325–334.
Torsvik T.H., 2009. BugPlates: Linking Biogeography and Palaeogeography. www. geodynamics.no.
Vavrdová M., 1988. Further acritarchs and terrestrial plant remains from the late Ordovician at Hlásná Treban
(Czechoslovakia). Casopis pro Mineralogii a Geologii. 33: 1- 10.
Vavrdová, M., 1989. New acritarchs and miospores from the late Ordovician at Hlásná Treban, Czechoslovakia. Casopis
pro Mineralogii a Geologii. 34: 403- 419.
Vecoli, M., Riboulleau, A., Versteegh, G.J.M., 2009. Palynology, organic geochemistry and carbon isotope analysis of a
latest Ordovician through Silurian clastic succession from borehole Tt1, Ghadamis Basin, southern Tunisia, North
Africa: Palaeoenvironmental interpretation. Palaeogeography, Palaeoclimatology, Palaeoecology. 272 (1-2): 378- 394.
Vecoli, M., Delabroye, A., Spina, A., Hints, O., 2011. Cryptospore assemblages from Upper Ordovician (Katian–
Hirnantian) strata of Anticosti Island, Québec, Canada, and Estonia: Palaeophytogeographic and palaeoclimatic
The first report of cryptospore assemblages of Late Ordovician in Iran, Ghelli… 137
implications. Review of Palaeobotany and Palynology. 166 (1-2): 76–93.
Wang Y., Li J., Wang R., 1997. Latest Ordovician cryptospores from southern Xinjiang,China. Review of Palaeobotany
and Palynology. 99 (1): 61–74.
Wang Y., Huai-cheng Z., Jun L., 2005. Late Silurian plant microfossil assemblage from Guangyuan, Sichuan, China.
Review of Palaeobotany and Palynology. 133 (3-4): 153- 168.
Wellman C.H., 1993. A land plant microfossil assemblage of Mid Silurian age from the Stonehaven Group, Scotland.
Journal of Micropalaeontology. 12 (3-4): 47–66.
Wellman C.H., 1996. Cryptospores from the type area of the Caradoc Series in southern Britain. In: Cleal, C.J. (Ed.),
Studies on Early Land Plant Spores from Britain: Special Papers in Palaeontology, 55: 103–136.
Wellman C.H., Richardson J.B., 1993. Terrestrial plant microfossils from Silurian inliers of the Midland valley of
Scotland. Palaeontology. 36: 155-193.
Wellman C.H., Richardson J.B., 1996, Sporomorph assemblages from the ‘Lower Old red Sandstone’ of Lorne, Scotland.,
In: Cleal, C.J. (Ed.), Studies on Early Land Plant Spores from Britain: Special Papers in Palaeontology. 55: 41–101.
Wellman C.H., Gray J., 2000. The microfossil record of early land plants. Philosophical Transactions Royal Society of
London. 355 (1398): 717-732.
Wellman C.H., Higgs K.T., Steemans P., 2000. Spore assemblages from a Silurian sequence in Borehole Hawiyah-151
from Saudi Arabia. In: Al-Hajri, S., and Owens, B. (Eds.), Stratigraphic Palynology of the Palaeozoic of Saudi Arabia:
GeoArabia, Bahrain, Special. 1: 116- 133,