Tectonic Evolution and Hydrocarbon Potential in Northern Area of the South Yellow Sea

Chunfeng Chen; Shiying Zhang; Yongjian Yao; Tianyao Hao; Zhiqiang Feng; Rongsheng Wan

doi:10.1007/s12583-010-0006-3

How Often Do Pigeons Breed _verified_ -

The short answer is that pigeons can breed , though 3 to 5 broods per year is more common in the wild.

The cycle from mating to independence for the young is remarkably fast, allowing for such frequent reproduction:

Because they overlap clutches, a single pair of pigeons (plus their offspring breeding in the same year) can theoretically produce over 50 pigeons in 12 months.

The short answer is that pigeons can breed , though 3 to 5 broods per year is more common in the wild.

The cycle from mating to independence for the young is remarkably fast, allowing for such frequent reproduction:

Because they overlap clutches, a single pair of pigeons (plus their offspring breeding in the same year) can theoretically produce over 50 pigeons in 12 months.

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Figure 1. Location and tectonic unit map in the South Yellow Sea and the adjacent areas. I. Xingmeng oro-gen; II. Wusuli orogen; III. Qinling orogen; IV. Sulu orogen (other Yanshanian orogens not marked). NC. North China block; HN. South China subcontinent (inclusive of Yangtze block, Xianggui block, and Ca-thaysian block); ZM. Zhemin block; SW. Suwan block; HY. Huaiyu block; JL. Jiaoliao (Korea) block; BM. Bamiantong block. F₁. Tancheng-Lujiang fault (Tanlu); F₂. Wulian-Zhucheng fault; F₃. Lianyungang-Huangmei fault; F₄. Qianliyan fault; F₅. west margin of Korea Peninsula fault (EMFYS); F₆. south margin of Chejudo Island fault (SMFJ1); F₇. Jiangshan-Shaoxing fault (Jiangshao); F₈. Yingdian-Qingshankou fault; F₉. Tuanfeng-Macheng fault; F₁₀. Xianning-Yangxin fault; F₁₁. Yangtze shear zone; F₁₂. Jixi-Gandongbei fault; F₁₃. Jiangnan fault; F₁₄. Suzhou-Qunshan fault; F₁₅. Lishui-Zhenghe-Dapu fault; F₁₆. Changle-Nan'ao fault; F₁₇. Wochuan fault; F₁₈. Mishan-Dunhua fault; F₁₉. Yilan-Yitong fault. BH. Bohai Sea; BHH. North Yellow Sea (1. the west depression; 2. the middle depression; 3. the east depression); NHH. South Yellow Sea (① Qianliyan massif; ② the northern basin, including Qunshan depression; ③ the middle massif; ④ Subei basin-southern basin of the South Yellow Sea; ⑤ Wunansha massif; ⑥ Zhemin uplift) (after Ma et al., 2004; with supplement of sea area).
Figure 2. Satellite Bouguer gravity abnormity and preliminary interpretation of main structure units in the South Yellow Sea. ① Qianliyan massif; ② the northern basin; ③ the middle massif; ④ the southern basin; ⑤ Wunansha massif; ⑥ Zhemin uplift. F₃. Lianyungang-Huangmei fault; F₄. Haizhou fault; F₇. Jiangshan-Shaoxing fault (Jiangshao) (after Zhang and Zhang, 2005).
Figure 3. Aeromagnetic abnormity ΔT and interpretation of main structure units in the South Yellow Sea. ① Sulu orogen; ② Qianliyan massif; ③ the northern basin; ④ Qunshan basin; ⑤ the middle massif; ⑥ Subei-South SYS basin; ⑦ Sunan-Wunansha massif; ⑧ Zhemin uplift. F₁. Tancheng-Lujiang fault (Tanlu); F₂. Wulian-Qingdao-Rongcheng fault; F₃. Lianyungang-Huangmei fault (Lianhuang); F₄. Haizhou-Qianliyan fault; F₅. west margin of Korea Peninsula fault; F₆. south margin of Chejudo Island fault; F₇. Jiangshan-Shaoxing fault (i.e., Jiangshao); F₈. the center fault of South Yellow Sea; F₉. south mar-gin fault of Wunansha (ΔT map after Zhang et al., 2007; geological structure interpretation in reference to Hao et al., 2007; Ma et al., 2004; Wan, 2004).
Figure 4. Distribution of structural elements in the northern basin of the South Yellow Sea.
Figure 5. EW-extending seismic profile showing the interior structure in Paleozoic strata in the north-ern basin of the South Yellow Sea (Line NHL203).
Figure 6. Seismic profile showing superimposed structures in the northern basin of the South Yellow Sea (Line NH331-1).
Figure 7. Sketch diagram showing hydrocarbon reservoir formation in the northern basin of the South Yel-low Sea. Cre. Cretaceous; Tai L.. lower part of Taizhou Formation; Tai U.. upper part of Taizhou Forma-tion.

How Often Do Pigeons Breed _verified_ -

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