Russian investigators said the driver of the snow-clearing machine was drunk and that his actions, along with "an error by air traffic controllers", appeared to have led to the crash -- a claim disputed by the driver's lawyer.
They also blamed senior airport officials for causing the accident through "criminal negligence", and said several executives would be suspended.
At Total, one of the world's biggest oil companies, staff at its Paris headquarters observed a minute's silence for their 63-year-old boss known affectionately as the "Big Moustache" because of his distinctive facial hair.
While respected by the industry for expanding Total's activities around the world, De Margerie was also often mired in controversy as he helmed the group when it was embroiled in judicial woes including the UN "oil-for-food" scandal.
Also Read
Just hours before the crash, De Margerie had met Russian Prime Minister Dmitry Medvedev at his country residence outside Moscow to discuss foreign investment in Russia, the Vedomosti business daily reported, despite Western sanctions over Moscow's role in the Ukraine conflict.
In his last public remarks in Moscow, De Margerie said Total's strategy "remains absolutely unchanged. We are engaged with Russia".
Russian President Vladimir Putin described De Margerie as "a true friend of our country, whom we will remember with the greatest warmth".
In France, President Francois Hollande said he learnt of De Margerie's death with "shock and sadness" while Prime Minister Manuel Valls said France had lost "a great captain of industry and a patriot".
Vnukovo airport said the Falcon Dassault business aviation jet crashed as it prepared to take off for Paris and that rescue services had put out a blaze.
Visibility was 350 metres at the time, it said, as Moscow saw its first snowfall of the winter yesterday.
The Interstate Aviation Committee, which investigates all Russian air accidents, said "it has been established that the driver of the snowplough was in a drunken state".
It added that a primary preliminary theory was that "an error by air traffic controllers and the actions of the snowplough driver" were to blame.