Changes

==Discussion==

==Discussion==

Hydrocarbon types reflect the composition of the kerogens from which they were generated. Kerogens are the insoluble organic matter in sedimentary rocks. Maps of hydrocarbon types estimate the number and distribution of mature generating [[[[source rock]]s]]. The following map of hydrocarbon types is based on analyses of more than 2000 oil, 600 gas, and 1200 seep samples correlated to specific source rocks. Nine oil-source-rock families have been identified (labeled 1-9; see table on following page), each having a specific geographic distribution related to mature source-rock location and [[migration]] paths. We will focus on the High Island-East Breaks area, where families 1 and 6 overlap (bold arrow).

Hydrocarbon types reflect the composition of the kerogens from which they were generated. Kerogens are the insoluble organic matter in sedimentary rocks. Maps of hydrocarbon types estimate the number and distribution of mature generating [[source rock]]s. The following map of hydrocarbon types is based on analyses of more than 2000 oil, 600 gas, and 1200 seep samples correlated to specific source rocks. Nine oil-source-rock families have been identified (labeled 1-9; see table on following page), each having a specific geographic distribution related to mature source-rock location and [[migration]] paths. We will focus on the High Island-East Breaks area, where families 1 and 6 overlap (bold arrow).

==Source table==

==Source table==

|-

|-

| Lower Tertiary (centered on Eocene, ~50-40 Ma)

| Lower Tertiary (centered on Eocene, ~50-40 Ma)

| Tertiary marine <ref group="t" name="ch04tblfn1"></ref> <br/> <break> </break> Tertiary intermediate <ref group="t" name="ch04tblfn1"></ref> <br/> Tertiary terrestrial

|  

* Tertiary marine <ref group="t" name="ch04tblfn1">Tertiary marine and Tertiary intermediate are mapped together.</ref>

 

* Tertiary intermediate <ref group="t" name="ch04tblfn1"></ref>  

| &#9312;<br />&#9312;<br />&#9313;

|-

|-

| Upper Cretaceous (centered on Turonian, ~85-95 Ma)

| Upper Cretaceous (centered on Turonian, ~85-95 Ma)

|

|

 

|-

|-

| Lower Cretaceous (centered on Aptian, ~115-105 Ma)

| Lower Cretaceous (centered on Aptian, ~115-105 Ma)

| Carbonate; elevated salinity; Lower Cretaceous <break> </break> Calcareous; moderate sulfur; Lower Cretaceous <ref group="t" name="ch04tblfn2"></ref> <br/>

|  

* Carbonate; elevated salinity; Lower Cretaceous

 

* Calcareous; moderate sulfur; Lower Cretaceous <ref group="t" name="ch04tblfn2">Calcareous–Moderate Sulfur–No Tertiary Influence and Calcareous–Moderate Sulfur–Lower Cretaceous are mapped as an undifferentiated unit.</ref>

| &#9316;<br />&#9315;

|-

|-

| Uppermost Jurassic (centered on Tithonian, ~140-130 Ma)

| Uppermost Jurassic (centered on Tithonian, ~140-130 Ma)

|

|

 

|-

|-

| Upper Jurassic (Oxfordian, ~ 152-145 Ma)

| Upper Jurassic (Oxfordian, ~ 152-145 Ma)

| Carbonate; elevated salinity; Jurassic <ref group="t" name="ch04tblfn4"></ref> <br/>

|  

|

* Carbonate; elevated salinity;

 

* Jurassic <ref group="t" name="ch04tblfn4">Oil subtypes reflecting differences in salinity and clastic input to source facies are known but are not delineated on Figure 4–5.</ref>

| &#9319;

|-

|-

| Triassic (Eagle Mills, > 210 Ma)

| Triassic (Eagle Mills, > 210 Ma)

|

|

 

|}

|}

[[file:sedimentary-basin-analysis_fig4-5.png|thumb|{{figure number|4-5}}Modified from Gross et al.<ref name=ch04r40 />).]]

[[file:sedimentary-basin-analysis_fig4-5.png|thumb|{{figure number|4-5}}Modified from Gross et al.<ref name=ch04r40 />).]]