The Relationship Between Redox-Sensitive Element Behaviors and Redox Conditions in Miocene Aged Bituminous Claystones of the Ilgın (Konya) Basin

Ali Sarı; Kamal Ismayılzada; Sinan Akıska; Fuat Erol

Article Details

The Relationship Between Redox-Sensitive Element Behaviors and Redox Conditions in Miocene Aged Bituminous Claystones of the Ilgın (Konya) Basin

Authors:

Ali Sarı | Kamal Ismayılzada | Sinan Akıska | Fuat Erol

Publisher:

Zonguldak Bulent Ecevit University

Main Topics:

Maden Yatakları ve Jeokimya

Journal:

Karaelmas Fen ve Mühendislik Dergisi Vol.14 Issue 2, pp.61-84

Document Type:

Article

Publication Date:

7/2024

Document Language:

Turkish

Document ID (Org No.):

2001323647

pISSN:

2146-7277

Keywords:

Abstract:

 In this study, the redox-sensitive trace elements in the Miocene-aged bituminous claystones rich in shallow organic matter TOC: 14.52-44.44; avg: 31.24 in the Ilgın basin Konya were investigated. The elements studied include Vanadium V, Uranium U, and Molybdenum Mo, as well as Zinc Zn, Nickel Ni, Copper Cu, and Cobalt Co, aiming to analyze their geochemical behaviors. Additionally, the influence of the basins redox conditions on organic matter accumulation was examined. For this purpose, 14 samples were systematically collected from the bituminous claystones, starting from the lignite level at the base up to the top. In the investigation of the behavior of redox-sensitive elements in the Miocene-aged bituminous claystones in the Ilgın area, the relationships between major and trace elements and their total organic carbon TOC content were examined. Major and trace element analyses were conducted on samples using an ICP-OES device, and TOC analyses were performed using a Rock Eval VI device. In the examined bituminous rocks, there are moderate correlations between TOC and Mo r0.529; weak and very weak correlations are observed for Cu r-0.230, Ni r-0.030, Zn r0.216, U r0.083, V r0.124, and Co r0.076. This indicates that the enrichment of these elements in sediments and sapropels from water masses does not involve organometallic ligands in humic acids except for Mo. Very weak correlation relationships of Fe with U r0.204, Ni r0.029, and Zn r-0.142 indicate that the enrichment of U and Zn in sapropel is not influenced by pyrite. However, the moderate correlation of Fe with Co r0.535 and strong correlation with Mo r0.722 suggest that the enrichment of Co and Mo in sapropel is influenced by pyrite. Very weak correlations between Mn and Cu r-0.562, Zn r-0.163, Ni r-0.318, V r-0.243, U r-0.142, and Mo r-0.600 indicate that manganese oxyhydroxides play no role in the diffusion and enrichment of these elements from water masses to sapropel. Sulfur shows very weak correlations with Ni r-0.121, V r-0.177, and Zn r-0.354; weak correlations with Cu r0.290 and U r0.302; moderate correlation with Co r0.476; and strong correlation with Mo r0.729. This suggests that Co precipitates as CoS and Mo as MoS2, while Cu, Zn, Ni, U, and V do not enrich as sulfides. A very strong correlation r0.929 between Fe and S indicates that Fe precipitates as pyrite FeS2, suggesting an anoxic redox condition. The redox conditions in the basin are oxicsuboxic and anoxic based on ThU ratios in all samples, except for samples RE-1 and RE-7; based on UTh ratios, except for samples RE-1 and RE-7; and based on VVNi ratios, except for samples RE-1, 2, 3, 6, and 12.

 In this study, the redox-sensitive trace elements in the Miocene-aged bituminous claystones rich in shallow organic matter TOC: 14.52-44.44; avg: 31.24 in the Ilgın basin Konya were investigated. The elements studied include Vanadium V, Uranium U, and Molybdenum Mo, as well as Zinc Zn, Nickel Ni, Copper Cu, and Cobalt Co, aiming to analyze their geochemical behaviors. Additionally, the influence of the basins redox conditions on organic matter accumulation was examined. For this purpose, 14 samples were systematically collected from the bituminous claystones, starting from the lignite level at the base up to the top. In the investigation of the behavior of redox-sensitive elements in the Miocene-aged bituminous claystones in the Ilgın area, the relationships between major and trace elements and their total organic carbon TOC content were examined. Major and trace element analyses were conducted on samples using an ICP-OES device, and TOC analyses were performed using a Rock Eval VI device. In the examined bituminous rocks, there are moderate correlations between TOC and Mo r0.529; weak and very weak correlations are observed for Cu r-0.230, Ni r-0.030, Zn r0.216, U r0.083, V r0.124, and Co r0.076. This indicates that the enrichment of these elements in sediments and sapropels from water masses does not involve organometallic ligands in humic acids except for Mo. Very weak correlation relationships of Fe with U r0.204, Ni r0.029, and Zn r-0.142 indicate that the enrichment of U and Zn in sapropel is not influenced by pyrite. However, the moderate correlation of Fe with Co r0.535 and strong correlation with Mo r0.722 suggest that the enrichment of Co and Mo in sapropel is influenced by pyrite. Very weak correlations between Mn and Cu r-0.562, Zn r-0.163, Ni r-0.318, V r-0.243, U r-0.142, and Mo r-0.600 indicate that manganese oxyhydroxides play no role in the diffusion and enrichment of these elements from water masses to sapropel. Sulfur shows very weak correlations with Ni r-0.121, V r-0.177, and Zn r-0.354; weak correlations with Cu r0.290 and U r0.302; moderate correlation with Co r0.476; and strong correlation with Mo r0.729. This suggests that Co precipitates as CoS and Mo as MoS2, while Cu, Zn, Ni, U, and V do not enrich as sulfides. A very strong correlation r0.929 between Fe and S indicates that Fe precipitates as pyrite FeS2, suggesting an anoxic redox condition. The redox conditions in the basin are oxicsuboxic and anoxic based on ThU ratios in all samples, except for samples RE-1 and RE-7; based on UTh ratios, except for samples RE-1 and RE-7; and based on VVNi ratios, except for samples RE-1, 2, 3, 6, and 12.

 In this study, the redox-sensitive trace elements in the Miocene-aged bituminous claystones rich in shallow organic matter TOC: 14.52-44.44; avg: 31.24 in the Ilgın basin Konya were investigated. The elements studied include Vanadium V, Uranium U, and Molybdenum Mo, as well as Zinc Zn, Nickel Ni, Copper Cu, and Cobalt Co, aiming to analyze their geochemical behaviors. Additionally, the influence of the basins redox conditions on organic matter accumulation was examined. For this purpose, 14 samples were systematically collected from the bituminous claystones, starting from the lignite level at the base up to the top. In the investigation of the behavior of redox-sensitive elements in the Miocene-aged bituminous claystones in the Ilgın area, the relationships between major and trace elements and their total organic carbon TOC content were examined. Major and trace element analyses were conducted on samples using an ICP-OES device, and TOC analyses were performed using a Rock Eval VI device. In the examined bituminous rocks, there are moderate correlations between TOC and Mo r0.529; weak and very weak correlations are observed for Cu r-0.230, Ni r-0.030, Zn r0.216, U r0.083, V r0.124, and Co r0.076. This indicates that the enrichment of these elements in sediments and sapropels from water masses does not involve organometallic ligands in humic acids except for Mo. Very weak correlation relationships of Fe with U r0.204, Ni r0.029, and Zn r-0.142 indicate that the enrichment of U and Zn in sapropel is not influenced by pyrite. However, the moderate correlation of Fe with Co r0.535 and strong correlation with Mo r0.722 suggest that the enrichment of Co and Mo in sapropel is influenced by pyrite. Very weak correlations between Mn and Cu r-0.562, Zn r-0.163, Ni r-0.318, V r-0.243, U r-0.142, and Mo r-0.600 indicate that manganese oxyhydroxides play no role in the diffusion and enrichment of these elements from water masses to sapropel. Sulfur shows very weak correlations with Ni r-0.121, V r-0.177, and Zn r-0.354; weak correlations with Cu r0.290 and U r0.302; moderate correlation with Co r0.476; and strong correlation with Mo r0.729. This suggests that Co precipitates as CoS and Mo as MoS2, while Cu, Zn, Ni, U, and V do not enrich as sulfides. A very strong correlation r0.929 between Fe and S indicates that Fe precipitates as pyrite FeS2, suggesting an anoxic redox condition. The redox conditions in the basin are oxicsuboxic and anoxic based on ThU ratios in all samples, except for samples RE-1 and RE-7; based on UTh ratios, except for samples RE-1 and RE-7; and based on VVNi ratios, except for samples RE-1, 2, 3, 6, and 12.

 Bu çalışmada, Ilgın Konya havzasında yüzlek veren organik maddece çok zengin TOC:14.52-44.44; ort:31.24 Miyosen yaşlı bitümlü kiltaşlarındaki redoksa duyarlı iz elementlerin: Vanadyum V, Uranyum U ve Molibden Mo, Çinko Zn, Nikel Ni, Bakır Cu ve Kobalt Co jeokimyasal davranışlarının incelenmesi ve havzanın redoks koşulunun organik madde birikimindeki etkisinin ortaya konulması amaçlanmıştır. Bu amaçla, tabandaki linyitli seviyesinden başlayarak tavana kadar sistematik olarak bitümlü kiltaşlarından 14 adet örnekleme yapılmıştır. Ilgın sahasındaki Miyosen yaşlı bitümlü kiltaşlarında redoksa duyarlı element davranışlarının incelenmesinde ana ve iz elementler ile bunların toplam organik madde TOC ile olan ilişkileri incelenmiştir. Örneklerde ana ve iz element analizleri ICP-OES cihazında ve TOC analizleri de Rock Eval VI cihazında yapılmıştır. İncelenen bitümlü kayaçlarda TOC ile Monin r0.529 orta derecede; Cu r -0.230, Ni r -0.030, Zn r 0.216, U r0.083, V r0.124 ve Coın r0.076 çok zayıf ve zayıf korelasyonları bulunmaktadır. Bu durum, Mo dışındaki diğer elementlerin su kütlesinden sapropele difüzyonunda ve tortullarda zenginleşmelerinde hümik asitlerdeki organometalik ligandların etkisinin olmadığını gösterir. Fein U r 0.204, Ni r 0.029 ve Zn ile r -0.142 olan çok zayıf korelasyon ilişkileri, U ve Znnun sapropelde zenginleşmelerinde piritin etkisinin olmadığını gösterir. Ancak, Fein Co ile r 0.535 orta ve Mo ile de r 0.722 güçlü korelasyon ilişkisi Co ve Monin sapropelde zenginleşmesinde piritin etkili olduğunu gösterir. Örneklerde, Mn ile Cu r -0.562, Zn r -0.163, Ni r -0.318, V r -0.243, U r -0.142 ve Mo r -0.600 arasındaki çok zayıf korelasyon ilişkisi bu elementlerin su kütlesinden Mn oksi-hidroksitler ile sapropele difüzyonunda ve zenginleşmelerinde Mn oksi-hidroksitlerin hiçbir rol oynamadığını göstermektedir. Kükürtün Ni r -0.121, V r -0.177 ve Zn r -0.354 ile çok zayıf; Cu r 0.290 ve U r0.302 ile zayıf; Co r0.476 ile orta ve Mo ile de r0.729 kuvvetli korelasyon ilişkisi vardır. Bu durum, Coın CoS şeklinde, Monin ise MoS2 şeklinde çökeldiğini; Cu, Zn, Ni, U ve V elementlerinin ise sülfid şeklinde bir zenginleşmelerinin olamadığını göstermektedir. Örneklerde, Fe ve S arasındaki çok güçlü r0.929 korelasyon ilişki Fenin pirit FeS2 fazında çökeldiğini ve redoks koşulunun da anoksik olduğunu gösterir. Havzadaki redoks şartları; ThU oranlarına göre tüm örneklerde; UTh oranlarına göre RE-1 ve RE-7 numaralı örnekler dışında; VVNi oranlarına görede RE-1,2,3,6 ve 12 numaralı örnekler dışında disoksiksuboksik ve anaoksiktir.

Article Details

The Relationship Between Redox-Sensitive Element Behaviors and Redox Conditions in Miocene Aged Bituminous Claystones of the Ilgın (Konya) Basin

Authors:

Ali Sarı | Kamal Ismayılzada | Sinan Akıska | Fuat Erol

Publisher:

Zonguldak Bulent Ecevit University

Main Topics:

Maden Yatakları ve Jeokimya

Journal:

Karaelmas Fen ve Mühendislik Dergisi Vol.14 Issue 2, pp.61-84

Document Type:

Article

Publication Date:

7/2024

Document Language:

Turkish

Document ID (Org No.):

2001323647

pISSN:

2146-7277

Anoxic environment

bituminous claystone

element enrichment

redox condition

organic matterAnoksik ortam

bitümlü kiltaşı

element zenginleşmesi

redoks koşulu

organik madde

Issues

Article Details

Authors: Ali Sarı | Kamal Ismayılzada | Sinan Akıska | Fuat Erol

Publisher: Zonguldak Bulent Ecevit University

Main Topics: Maden Yatakları ve Jeokimya

Journal: Karaelmas Fen ve Mühendislik Dergisi Vol.14 Issue 2, pp.61-84

Document Type: Article

Publication Date: 7/2024

Document Language: Turkish

Document ID (Org No.): 2001323647

pISSN: 2146-7277

Issues

Authors:

Ali Sarı | Kamal Ismayılzada | Sinan Akıska | Fuat Erol

Publisher:

Zonguldak Bulent Ecevit University

Main Topics:

Maden Yatakları ve Jeokimya

Journal:

Karaelmas Fen ve Mühendislik Dergisi Vol.14 Issue 2, pp.61-84

Document Type:

Article

Publication Date:

7/2024

Document Language:

Turkish

Document ID (Org No.):

2001323647

pISSN:

2146-7277